MPEP § 2106.03 — Eligibility Step 1: The Four Categories of Statutory Subject Matter (Annotated Rules)

§2106.03 Eligibility Step 1: The Four Categories of Statutory Subject Matter

USPTO MPEP version: BlueIron's Update: 2026-01-10

This page consolidates and annotates all enforceable requirements under MPEP § 2106.03, including statutory authority, regulatory rules, examiner guidance, and practice notes. It is provided as guidance, with links to the ground truth sources. This is information only, it is not legal advice.

Eligibility Step 1: The Four Categories of Statutory Subject Matter

This section addresses Eligibility Step 1: The Four Categories of Statutory Subject Matter. Primary authority: 35 U.S.C. 101 and 35 U.S.C. 100(b). Contains: 3 requirements, 2 guidance statements, 1 permission, and 13 other statements.

Key Rules

Topic

Machine

12 rules
StatutoryInformativeAlways
[mpep-2106-03-15a3e335bdfb061bccbe5f27]
Machine Requirement for Patent Eligibility
Note:
A claimed invention must be a physical, tangible mechanical device or combination of devices to fall within the machine category.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A machine is a “concrete thing, consisting of parts, or of certain devices and combination of devices.” Digitech, 758 F.3d at 1348-49, 111 USPQ2d at 1719 (quoting Burr v. Duryee, 68 U.S. 531, 570, 17 L. Ed. 650, 657 (1863)). This category “includes every mechanical device or combination of mechanical powers and devices to perform some function and produce a certain effect or result.” Nuijten, 500 F.3d at 1355, 84 USPQ2d at 1501 (quoting Corning v. Burden, 56 U.S. 252, 267, 14 L. Ed. 683, 690 (1854)).

Jump to MPEP SourceMachineStatutory Categories of InventionProcess (Method)
StatutoryInformativeAlways
[mpep-2106-03-a0f8d72aaf1987ad92f37535]
Machine Requirement for Physical Invention
Note:
Examiners must verify that a claimed invention falls within the machine category and is in physical form.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A machine is a “concrete thing, consisting of parts, or of certain devices and combination of devices.” Digitech, 758 F.3d at 1348-49, 111 USPQ2d at 1719 (quoting Burr v. Duryee, 68 U.S. 531, 570, 17 L. Ed. 650, 657 (1863)). This category “includes every mechanical device or combination of mechanical powers and devices to perform some function and produce a certain effect or result.” Nuijten, 500 F.3d at 1355, 84 USPQ2d at 1501 (quoting Corning v. Burden, 56 U.S. 252, 267, 14 L. Ed. 683, 690 (1854)).

Jump to MPEP SourceMachineProcess (Method)Statutory Categories of Invention
StatutoryInformativeAlways
[mpep-2106-03-01fb07cdad0c8f288b38be32]
Machine Requirement for Physical Invention
Note:
A claimed invention must be a physical machine consisting of parts or combinations of mechanical devices to perform some function.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A machine is a “concrete thing, consisting of parts, or of certain devices and combination of devices.” Digitech, 758 F.3d at 1348-49, 111 USPQ2d at 1719 (quoting Burr v. Duryee, 68 U.S. 531, 570, 17 L. Ed. 650, 657 (1863)). This category “includes every mechanical device or combination of mechanical powers and devices to perform some function and produce a certain effect or result.” Nuijten, 500 F.3d at 1355, 84 USPQ2d at 1501 (quoting Corning v. Burden, 56 U.S. 252, 267, 14 L. Ed. 683, 690 (1854)).

Jump to MPEP SourceMachineProcess (Method)Statutory Categories of Invention
StatutoryInformativeAlways
[mpep-2106-03-c2317c2184374bcc6664c4d8]
Requirement for Physical Invention
Note:
Inventions must be physical machines to qualify as statutory subject matter.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A machine is a “concrete thing, consisting of parts, or of certain devices and combination of devices.” Digitech, 758 F.3d at 1348-49, 111 USPQ2d at 1719 (quoting Burr v. Duryee, 68 U.S. 531, 570, 17 L. Ed. 650, 657 (1863)). This category “includes every mechanical device or combination of mechanical powers and devices to perform some function and produce a certain effect or result.” Nuijten, 500 F.3d at 1355, 84 USPQ2d at 1501 (quoting Corning v. Burden, 56 U.S. 252, 267, 14 L. Ed. 683, 690 (1854)).

Jump to MPEP SourceMachineProcess (Method)Statutory Categories of Invention
StatutoryInformativeAlways
[mpep-2106-03-55bc6a03dddaff272e9ae71d]
Requirement for Tangible Articles
Note:
Examiners must verify that inventions claimed as manufactures are physical and tangible, resulting from man-made processes.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A manufacture is “a tangible article that is given a new form, quality, property, or combination through man-made or artificial means.” Digitech, 758 F.3d at 1349, 111 USPQ2d at 1719-20 (citing Diamond v. Chakrabarty, 447 U.S. 303, 308, 206 USPQ 193, 197 (1980)). As the courts have explained, manufactures are articles that result from the process of manufacturing, i.e., they were produced “from raw or prepared materials by giving to these materials new forms, qualities, properties, or combinations, whether by hand-labor or by machinery.” Samsung Electronics Co. v. Apple Inc., 137 S. Ct. 429, 120 USPQ2d 1749, 1752-3 (2016) (quoting Diamond v. Chakrabarty, 447 U. S. 303, 308, 206 USPQ 193, 196-97 (1980)); Nuijten, 500 F.3d at 1356-57, 84 USPQ2d at 1502. Manufactures also include “the parts of a machine considered separately from the machine itself.” Samsung Electronics, 137 S. Ct. at 435, 120 USPQ2d at 1753 (quoting 1 W. Robinson, The Law of Patents for Useful Inventions §183, p. 270 (1890)).

Jump to MPEP SourceMachineManufacture (Article of Manufacture)Process (Method)
StatutoryInformativeAlways
[mpep-2106-03-c76e7fe62a2257914de9314d]
Requirement for Tangible Articles
Note:
Examiners must verify that inventions claimed as manufactures are in a physical or tangible form and result from man-made processes.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A manufacture is “a tangible article that is given a new form, quality, property, or combination through man-made or artificial means.” Digitech, 758 F.3d at 1349, 111 USPQ2d at 1719-20 (citing Diamond v. Chakrabarty, 447 U.S. 303, 308, 206 USPQ 193, 197 (1980)). As the courts have explained, manufactures are articles that result from the process of manufacturing, i.e., they were produced “from raw or prepared materials by giving to these materials new forms, qualities, properties, or combinations, whether by hand-labor or by machinery.” Samsung Electronics Co. v. Apple Inc., 137 S. Ct. 429, 120 USPQ2d 1749, 1752-3 (2016) (quoting Diamond v. Chakrabarty, 447 U. S. 303, 308, 206 USPQ 193, 196-97 (1980)); Nuijten, 500 F.3d at 1356-57, 84 USPQ2d at 1502. Manufactures also include “the parts of a machine considered separately from the machine itself.” Samsung Electronics, 137 S. Ct. at 435, 120 USPQ2d at 1753 (quoting 1 W. Robinson, The Law of Patents for Useful Inventions §183, p. 270 (1890)).

Jump to MPEP SourceMachineManufacture (Article of Manufacture)Process (Method)
StatutoryInformativeAlways
[mpep-2106-03-1a9f047644756f433eaf9b7c]
Parts of Machines Considered Manufactures
Note:
Inventions that are parts of machines, considered separately from the machine itself, must be claimed in a physical or tangible form.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A manufacture is “a tangible article that is given a new form, quality, property, or combination through man-made or artificial means.” Digitech, 758 F.3d at 1349, 111 USPQ2d at 1719-20 (citing Diamond v. Chakrabarty, 447 U.S. 303, 308, 206 USPQ 193, 197 (1980)). As the courts have explained, manufactures are articles that result from the process of manufacturing, i.e., they were produced “from raw or prepared materials by giving to these materials new forms, qualities, properties, or combinations, whether by hand-labor or by machinery.” Samsung Electronics Co. v. Apple Inc., 137 S. Ct. 429, 120 USPQ2d 1749, 1752-3 (2016) (quoting Diamond v. Chakrabarty, 447 U. S. 303, 308, 206 USPQ 193, 196-97 (1980)); Nuijten, 500 F.3d at 1356-57, 84 USPQ2d at 1502. Manufactures also include “the parts of a machine considered separately from the machine itself.” Samsung Electronics, 137 S. Ct. at 435, 120 USPQ2d at 1753 (quoting 1 W. Robinson, The Law of Patents for Useful Inventions §183, p. 270 (1890)).

Jump to MPEP SourceMachineStatutory Categories of InventionManufacture (Article of Manufacture)
StatutoryInformativeAlways
[mpep-2106-03-4a90334fae49fd7ee1eefb52]
Intangible Collection of Data Not Statutory Product
Note:
A claimed 'device profile' comprising data sets does not meet statutory product categories as it lacks physical form.

As the courts' definitions of machines, manufactures and compositions of matter indicate, a product must have a physical or tangible form in order to fall within one of these statutory categories. Digitech, 758 F.3d at 1348, 111 USPQ2d at 1719. Thus, the Federal Circuit has held that a product claim to an intangible collection of information, even if created by human effort, does not fall within any statutory category. Digitech, 758 F.3d at 1350, 111 USPQ2d at 1720 (claimed “device profile” comprising two sets of data did not meet any of the categories because it was neither a process nor a tangible product). Similarly, software expressed as code or a set of instructions detached from any medium is an idea without physical embodiment. See Microsoft Corp. v. AT&T Corp., 550 U.S. 437, 449, 82 USPQ2d 1400, 1407 (2007); see also Benson, 409 U.S. 67, 175 USPQ2d 675 (An "idea" is not patent eligible). Thus, a product claim to a software program that does not also contain at least one structural limitation (such as a “means plus function” limitation) has no physical or tangible form, and thus does not fall within any statutory category. Another example of an intangible product that does not fall within a statutory category is a paradigm or business model for a marketing company. In re Ferguson, 558 F.3d 1359, 1364, 90 USPQ2d 1035, 1039-40 (Fed. Cir. 2009).

Jump to MPEP SourceMachineManufacture (Article of Manufacture)Process (Method)
StatutoryInformativeAlways
[mpep-2106-03-a3fcc4943e0a19ef03d8d5d0]
Software Without Medium Is Not Patentable
Note:
A software program expressed as code without a physical medium does not meet the statutory category requirements for patent eligibility.

As the courts' definitions of machines, manufactures and compositions of matter indicate, a product must have a physical or tangible form in order to fall within one of these statutory categories. Digitech, 758 F.3d at 1348, 111 USPQ2d at 1719. Thus, the Federal Circuit has held that a product claim to an intangible collection of information, even if created by human effort, does not fall within any statutory category. Digitech, 758 F.3d at 1350, 111 USPQ2d at 1720 (claimed “device profile” comprising two sets of data did not meet any of the categories because it was neither a process nor a tangible product). Similarly, software expressed as code or a set of instructions detached from any medium is an idea without physical embodiment. See Microsoft Corp. v. AT&T Corp., 550 U.S. 437, 449, 82 USPQ2d 1400, 1407 (2007); see also Benson, 409 U.S. 67, 175 USPQ2d 675 (An "idea" is not patent eligible). Thus, a product claim to a software program that does not also contain at least one structural limitation (such as a “means plus function” limitation) has no physical or tangible form, and thus does not fall within any statutory category. Another example of an intangible product that does not fall within a statutory category is a paradigm or business model for a marketing company. In re Ferguson, 558 F.3d 1359, 1364, 90 USPQ2d 1035, 1039-40 (Fed. Cir. 2009).

Jump to MPEP SourceMachineManufacture (Article of Manufacture)Process (Method)
StatutoryPermittedAlways
[mpep-2106-03-20980caac15103200d29f41b]
BRI of Machine Readable Media Includes Transitory Signals
Note:
The broadest reasonable interpretation of machine readable media can include non-statutory transitory forms of signal transmission, such as propagating electrical or electromagnetic signals.

For example, the BRI of machine readable media can encompass non-statutory transitory forms of signal transmission, such as a propagating electrical or electromagnetic signal per se. See In re Nuijten, 500 F.3d 1346, 84 USPQ2d 1495 (Fed. Cir. 2007). When the BRI encompasses transitory forms of signal transmission, a rejection under 35 U.S.C. 101 as failing to claim statutory subject matter would be appropriate. Thus, a claim to a computer readable medium that can be a compact disc or a carrier wave covers a non-statutory embodiment and therefore should be rejected under 35 U.S.C. 101 as being directed to non-statutory subject matter. See, e.g., Mentor Graphics v. EVE-USA, Inc., 851 F.3d at 1294-95, 112 USPQ2d at 1134 (claims to a “machine-readable medium” were non-statutory, because their scope encompassed both statutory random-access memory and non-statutory carrier waves).

Jump to MPEP SourceMachineStatutory Categories of InventionPatent Eligibility
StatutoryInformativeAlways
[mpep-2106-03-9f7a81ad1249efd97f71230b]
Machine Readable Medium Can Include Non-Statutory Forms
Note:
A claim to a machine readable medium that can be a compact disc or a carrier wave covers non-statutory embodiments and should be rejected under 35 U.S.C. 101 as being directed to non-statutory subject matter.

For example, the BRI of machine readable media can encompass non-statutory transitory forms of signal transmission, such as a propagating electrical or electromagnetic signal per se. See In re Nuijten, 500 F.3d 1346, 84 USPQ2d 1495 (Fed. Cir. 2007). When the BRI encompasses transitory forms of signal transmission, a rejection under 35 U.S.C. 101 as failing to claim statutory subject matter would be appropriate. Thus, a claim to a computer readable medium that can be a compact disc or a carrier wave covers a non-statutory embodiment and therefore should be rejected under 35 U.S.C. 101 as being directed to non-statutory subject matter. See, e.g., Mentor Graphics v. EVE-USA, Inc., 851 F.3d at 1294-95, 112 USPQ2d at 1134 (claims to a “machine-readable medium” were non-statutory, because their scope encompassed both statutory random-access memory and non-statutory carrier waves).

Jump to MPEP SourceMachineStatutory Categories of InventionPatent Eligibility
StatutoryInformativeAlways
[mpep-2106-03-f459495115de1e89fddbec06]
Machine-Readable Medium Claim Scope Includes Non-Statutory Elements
Note:
A claim to a machine-readable medium that includes both statutory and non-statutory elements is not eligible for patent protection under 35 U.S.C. 101.

For example, the BRI of machine readable media can encompass non-statutory transitory forms of signal transmission, such as a propagating electrical or electromagnetic signal per se. See In re Nuijten, 500 F.3d 1346, 84 USPQ2d 1495 (Fed. Cir. 2007). When the BRI encompasses transitory forms of signal transmission, a rejection under 35 U.S.C. 101 as failing to claim statutory subject matter would be appropriate. Thus, a claim to a computer readable medium that can be a compact disc or a carrier wave covers a non-statutory embodiment and therefore should be rejected under 35 U.S.C. 101 as being directed to non-statutory subject matter. See, e.g., Mentor Graphics v. EVE-USA, Inc., 851 F.3d at 1294-95, 112 USPQ2d at 1134 (claims to a “machine-readable medium” were non-statutory, because their scope encompassed both statutory random-access memory and non-statutory carrier waves).

Jump to MPEP SourceMachineStatutory Categories of InventionPatent Eligibility
Topic

Manufacture (Article of Manufacture)

5 rules
StatutoryInformativeAlways
[mpep-2106-03-6a6b298e187a05374732fb58]
Definition of Manufactures for Patent Eligibility
Note:
This rule defines what constitutes a manufacture, which must be given a new form, quality, property, or combination through man-made means to be patent eligible.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A manufacture is “a tangible article that is given a new form, quality, property, or combination through man-made or artificial means.” Digitech, 758 F.3d at 1349, 111 USPQ2d at 1719-20 (citing Diamond v. Chakrabarty, 447 U.S. 303, 308, 206 USPQ 193, 197 (1980)). As the courts have explained, manufactures are articles that result from the process of manufacturing, i.e., they were produced “from raw or prepared materials by giving to these materials new forms, qualities, properties, or combinations, whether by hand-labor or by machinery.” Samsung Electronics Co. v. Apple Inc., 137 S. Ct. 429, 120 USPQ2d 1749, 1752-3 (2016) (quoting Diamond v. Chakrabarty, 447 U. S. 303, 308, 206 USPQ 193, 196-97 (1980)); Nuijten, 500 F.3d at 1356-57, 84 USPQ2d at 1502. Manufactures also include “the parts of a machine considered separately from the machine itself.” Samsung Electronics, 137 S. Ct. at 435, 120 USPQ2d at 1753 (quoting 1 W. Robinson, The Law of Patents for Useful Inventions §183, p. 270 (1890)).

Jump to MPEP SourceManufacture (Article of Manufacture)Statutory Categories of InventionMachine
StatutoryRequiredAlways
[mpep-2106-03-7b08826a15743533ad44611f]
Product Must Have Physical Form
Note:
A product claim must have a physical or tangible form to fall within statutory categories of machines, manufactures, and compositions of matter.

As the courts' definitions of machines, manufactures and compositions of matter indicate, a product must have a physical or tangible form in order to fall within one of these statutory categories. Digitech, 758 F.3d at 1348, 111 USPQ2d at 1719. Thus, the Federal Circuit has held that a product claim to an intangible collection of information, even if created by human effort, does not fall within any statutory category. Digitech, 758 F.3d at 1350, 111 USPQ2d at 1720 (claimed “device profile” comprising two sets of data did not meet any of the categories because it was neither a process nor a tangible product). Similarly, software expressed as code or a set of instructions detached from any medium is an idea without physical embodiment. See Microsoft Corp. v. AT&T Corp., 550 U.S. 437, 449, 82 USPQ2d 1400, 1407 (2007); see also Benson, 409 U.S. 67, 175 USPQ2d 675 (An "idea" is not patent eligible). Thus, a product claim to a software program that does not also contain at least one structural limitation (such as a “means plus function” limitation) has no physical or tangible form, and thus does not fall within any statutory category. Another example of an intangible product that does not fall within a statutory category is a paradigm or business model for a marketing company. In re Ferguson, 558 F.3d 1359, 1364, 90 USPQ2d 1035, 1039-40 (Fed. Cir. 2009).

Jump to MPEP SourceManufacture (Article of Manufacture)MachineProcess (Method)
StatutoryInformativeAlways
[mpep-2106-03-975fa48631e9a7b8a36aaf2f]
Intangible Collection of Information Does Not Fall Within Statutory Categories
Note:
A product claim to an intangible collection of information, regardless of human effort in creation, does not meet the statutory categories for patent eligibility.

As the courts' definitions of machines, manufactures and compositions of matter indicate, a product must have a physical or tangible form in order to fall within one of these statutory categories. Digitech, 758 F.3d at 1348, 111 USPQ2d at 1719. Thus, the Federal Circuit has held that a product claim to an intangible collection of information, even if created by human effort, does not fall within any statutory category. Digitech, 758 F.3d at 1350, 111 USPQ2d at 1720 (claimed “device profile” comprising two sets of data did not meet any of the categories because it was neither a process nor a tangible product). Similarly, software expressed as code or a set of instructions detached from any medium is an idea without physical embodiment. See Microsoft Corp. v. AT&T Corp., 550 U.S. 437, 449, 82 USPQ2d 1400, 1407 (2007); see also Benson, 409 U.S. 67, 175 USPQ2d 675 (An "idea" is not patent eligible). Thus, a product claim to a software program that does not also contain at least one structural limitation (such as a “means plus function” limitation) has no physical or tangible form, and thus does not fall within any statutory category. Another example of an intangible product that does not fall within a statutory category is a paradigm or business model for a marketing company. In re Ferguson, 558 F.3d 1359, 1364, 90 USPQ2d 1035, 1039-40 (Fed. Cir. 2009).

Jump to MPEP SourceManufacture (Article of Manufacture)Statutory Categories of InventionMachine
StatutoryInformativeAlways
[mpep-2106-03-e9be317d6cea2ef67a3b4587]
Product Claims to Software Require Structural Limitation
Note:
A product claim to a software program without structural limitations does not have physical form and thus is not within any statutory category.

As the courts' definitions of machines, manufactures and compositions of matter indicate, a product must have a physical or tangible form in order to fall within one of these statutory categories. Digitech, 758 F.3d at 1348, 111 USPQ2d at 1719. Thus, the Federal Circuit has held that a product claim to an intangible collection of information, even if created by human effort, does not fall within any statutory category. Digitech, 758 F.3d at 1350, 111 USPQ2d at 1720 (claimed “device profile” comprising two sets of data did not meet any of the categories because it was neither a process nor a tangible product). Similarly, software expressed as code or a set of instructions detached from any medium is an idea without physical embodiment. See Microsoft Corp. v. AT&T Corp., 550 U.S. 437, 449, 82 USPQ2d 1400, 1407 (2007); see also Benson, 409 U.S. 67, 175 USPQ2d 675 (An "idea" is not patent eligible). Thus, a product claim to a software program that does not also contain at least one structural limitation (such as a “means plus function” limitation) has no physical or tangible form, and thus does not fall within any statutory category. Another example of an intangible product that does not fall within a statutory category is a paradigm or business model for a marketing company. In re Ferguson, 558 F.3d 1359, 1364, 90 USPQ2d 1035, 1039-40 (Fed. Cir. 2009).

Jump to MPEP SourceManufacture (Article of Manufacture)Statutory Categories of InventionPatent Eligibility
StatutoryInformativeAlways
[mpep-2106-03-77f080860a4aaecf4acfe372]
Business Model Not Statutory Category
Note:
A business model for a marketing company is not considered a statutory category under patent law.

As the courts' definitions of machines, manufactures and compositions of matter indicate, a product must have a physical or tangible form in order to fall within one of these statutory categories. Digitech, 758 F.3d at 1348, 111 USPQ2d at 1719. Thus, the Federal Circuit has held that a product claim to an intangible collection of information, even if created by human effort, does not fall within any statutory category. Digitech, 758 F.3d at 1350, 111 USPQ2d at 1720 (claimed “device profile” comprising two sets of data did not meet any of the categories because it was neither a process nor a tangible product). Similarly, software expressed as code or a set of instructions detached from any medium is an idea without physical embodiment. See Microsoft Corp. v. AT&T Corp., 550 U.S. 437, 449, 82 USPQ2d 1400, 1407 (2007); see also Benson, 409 U.S. 67, 175 USPQ2d 675 (An "idea" is not patent eligible). Thus, a product claim to a software program that does not also contain at least one structural limitation (such as a “means plus function” limitation) has no physical or tangible form, and thus does not fall within any statutory category. Another example of an intangible product that does not fall within a statutory category is a paradigm or business model for a marketing company. In re Ferguson, 558 F.3d 1359, 1364, 90 USPQ2d 1035, 1039-40 (Fed. Cir. 2009).

Jump to MPEP SourceManufacture (Article of Manufacture)Statutory Categories of InventionMachine
Topic

Patent Eligibility

5 rules
StatutoryRequiredAlways
[mpep-2106-03-a1e80e6e1a2395889cd6ffac]
Claim Must Fall Within Statutory Categories
Note:
The claim must fall within one of the four statutory categories (process, machine, manufacture, or composition of matter) to proceed further in the patent eligibility analysis.
In the context of the flowchart in MPEP § 2106, subsection III, Step 1 determines whether:
  • • The claim as a whole does not fall within any statutory category (Step 1: NO) and thus is non-statutory, warranting a rejection for failure to claim statutory subject matter; or
  • • The claim as a whole falls within one or more statutory categories (Step 1: YES), and thus must be further analyzed to determine whether it qualifies as eligible at Pathway A or requires further analysis at Step 2A to determine if the claim is directed to a judicial exception.
Jump to MPEP SourcePatent Eligibility
StatutoryRequiredAlways
[mpep-2106-03-061d8238f2c8bc8927887f87]
Claim Must Fall Within Statutory Categories for Eligibility
Note:
The claim must fall within one of the statutory categories to be eligible for patent protection and requires further analysis at Step 2A if it is directed to a judicial exception.

In the context of the flowchart in MPEP § 2106, subsection III, Step 1 determines whether • The claim as a whole falls within one or more statutory categories (Step 1: YES), and thus must be further analyzed to determine whether it qualifies as eligible at Pathway A or requires further analysis at Step 2A to determine if the claim is directed to a judicial exception.

Jump to MPEP SourcePatent Eligibility
StatutoryRecommendedAlways
[mpep-2106-03-00bfa9d21aaf644a3df79fe4]
Claim Covering Both Statutory and Non-Statutory Embodiments Not Eligible for Patent Protection
Note:
A claim that covers both statutory and non-statutory embodiments is not eligible for patent protection and should be rejected under 35 U.S.C. 101.

A claim whose BRI covers both statutory and non-statutory embodiments embraces subject matter that is not eligible for patent protection and therefore is directed to non-statutory subject matter. Such claims fail the first step (Step 1: NO) and should be rejected under 35 U.S.C. 101, for at least this reason. In such a case, it is a best practice for the examiner to point out the BRI and recommend an amendment, if possible, that would narrow the claim to those embodiments that fall within a statutory category.

Jump to MPEP SourcePatent EligibilityStatutory Categories of Invention
StatutoryRequiredAlways
[mpep-2106-03-02e9d45c692a141c00fa5fd0]
Claim Not Within Statutory Categories Requires Rejection Under 35 U.S.C. 101
Note:
If a claim clearly does not fall within the four categories of statutory subject matter, it must be rejected under 35 U.S.C. 101 as directed to non-statutory subject matter.

If a claim is clearly not within one of the four categories (Step 1: NO), then a rejection under 35 U.S.C. 101 must be made indicating that the claim is directed to non-statutory subject matter. Form paragraphs 7.05 and 7.05.01 should be used; see MPEP § 2106.07(a)(1). However, as shown in the flowchart in MPEP § 2106 subsection III, when a claim fails under Step 1 (Step 1: NO), but it appears from applicant’s disclosure that the claim could be amended to fall within a statutory category (Step 1: YES), the analysis should proceed to determine whether such an amended claim would qualify as eligible at Pathway A, B or C. In such a case, it is a best practice for the examiner to recommend an amendment, if possible, that would resolve eligibility of the claim.

Jump to MPEP SourcePatent EligibilityStatutory Categories of Invention
StatutoryRecommendedAlways
[mpep-2106-03-4c3ff2bcc1cf298d03b5de1b]
Examiner Should Recommend Amendment to Resolve Eligibility
Note:
When a claim fails Step 1 of the eligibility test but could be amended to fall within a statutory category, the examiner should recommend an amendment that resolves eligibility.

If a claim is clearly not within one of the four categories (Step 1: NO), then a rejection under 35 U.S.C. 101 must be made indicating that the claim is directed to non-statutory subject matter. Form paragraphs 7.05 and 7.05.01 should be used; see MPEP § 2106.07(a)(1). However, as shown in the flowchart in MPEP § 2106 subsection III, when a claim fails under Step 1 (Step 1: NO), but it appears from applicant’s disclosure that the claim could be amended to fall within a statutory category (Step 1: YES), the analysis should proceed to determine whether such an amended claim would qualify as eligible at Pathway A, B or C. In such a case, it is a best practice for the examiner to recommend an amendment, if possible, that would resolve eligibility of the claim.

Jump to MPEP SourcePatent EligibilityStatutory Categories of Invention
Topic

Composition of Matter

4 rules
StatutoryInformativeAlways
[mpep-2106-03-dc8a6c92e8a4a62e7bf80d9c]
Definition of Composition of Matter
Note:
A composition of matter is defined as a combination of two or more substances and includes all composite articles.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A composition of matter is a “combination of two or more substances and includes all composite articles.” Digitech, 758 F.3d at 1348-49, 111 USPQ2d at 1719 (citation omitted). This category includes all compositions of two or more substances and all composite articles, “'whether they be the results of chemical union or of mechanical mixture, or whether they be gases, fluids, powders or solids.'” Chakrabarty, 447 U.S. at 308, 206 USPQ at 197 (quoting Shell Dev. Co. v. Watson, 149 F. Supp. 279, 280 (D.D.C. 1957); id. at 310 holding genetically modified microorganism to be a manufacture or composition of matter).

Jump to MPEP SourceComposition of MatterStatutory Categories of InventionManufacture (Article of Manufacture)
StatutoryInformativeAlways
[mpep-2106-03-e95d9e47dfa801dd532fa438]
Requirement for Physical or Tangible Form
Note:
Inventions must be in a physical or tangible form to fall under the category of composition of matter.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A composition of matter is a “combination of two or more substances and includes all composite articles.” Digitech, 758 F.3d at 1348-49, 111 USPQ2d at 1719 (citation omitted). This category includes all compositions of two or more substances and all composite articles, “'whether they be the results of chemical union or of mechanical mixture, or whether they be gases, fluids, powders or solids.'” Chakrabarty, 447 U.S. at 308, 206 USPQ at 197 (quoting Shell Dev. Co. v. Watson, 149 F. Supp. 279, 280 (D.D.C. 1957); id. at 310 holding genetically modified microorganism to be a manufacture or composition of matter).

Jump to MPEP SourceComposition of MatterManufacture (Article of Manufacture)Process (Method)
StatutoryInformativeAlways
[mpep-2106-03-c58703df2e1a8f097f70fc95]
Requirement for Composite Articles
Note:
The rule requires that a claimed invention must be a composition of two or more substances, whether resulting from chemical union or mechanical mixture, and can exist in any form such as gases, fluids, powders, or solids.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A composition of matter is a “combination of two or more substances and includes all composite articles.” Digitech, 758 F.3d at 1348-49, 111 USPQ2d at 1719 (citation omitted). This category includes all compositions of two or more substances and all composite articles, “'whether they be the results of chemical union or of mechanical mixture, or whether they be gases, fluids, powders or solids.'” Chakrabarty, 447 U.S. at 308, 206 USPQ at 197 (quoting Shell Dev. Co. v. Watson, 149 F. Supp. 279, 280 (D.D.C. 1957); id. at 310 holding genetically modified microorganism to be a manufacture or composition of matter).

Jump to MPEP SourceComposition of MatterManufacture (Article of Manufacture)Process (Method)
StatutoryInformativeAlways
[mpep-2106-03-535afa566acb81c4515cf69c]
Genetically Modified Microorganism Is a Composition of Matter
Note:
The rule states that genetically modified microorganisms fall under the category of compositions of matter, which includes combinations of two or more substances.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A composition of matter is a “combination of two or more substances and includes all composite articles.” Digitech, 758 F.3d at 1348-49, 111 USPQ2d at 1719 (citation omitted). This category includes all compositions of two or more substances and all composite articles, “'whether they be the results of chemical union or of mechanical mixture, or whether they be gases, fluids, powders or solids.'” Chakrabarty, 447 U.S. at 308, 206 USPQ at 197 (quoting Shell Dev. Co. v. Watson, 149 F. Supp. 279, 280 (D.D.C. 1957); id. at 310 holding genetically modified microorganism to be a manufacture or composition of matter).

Jump to MPEP SourceComposition of MatterManufacture (Article of Manufacture)Statutory Categories of Invention
Topic

35 U.S.C. 101 – Patent Eligibility

3 rules
StatutoryInformativeAlways
[mpep-2106-03-a2b91c4cb7fe4f1624719f71]
Four Categories of Patentable Inventions
Note:
The rule outlines the four categories of subject matter that are eligible for a patent under 35 U.S.C. 101: processes, machines, manufactures, and compositions of matter.

35 U.S.C. 101 enumerates four categories of subject matter that Congress deemed to be appropriate subject matter for a patent: processes, machines, manufactures and compositions of matter. As explained by the courts, these “four categories together describe the exclusive reach of patentable subject matter. If a claim covers material not found in any of the four statutory categories, that claim falls outside the plainly expressed scope of § 101 even if the subject matter is otherwise new and useful.” In re Nuijten, 500 F.3d 1346, 1354, 84 USPQ2d 1495, 1500 (Fed. Cir. 2007).

Jump to MPEP SourcePatent EligibilityStatutory Categories of InventionUtility Requirement
StatutoryInformativeAlways
[mpep-2106-03-0d161a49f73c0c85973773cd]
Patentable Subject Matter Must Fall Within Four Categories
Note:
The rule states that patent claims must cover processes, machines, manufactures, or compositions of matter to be eligible under 35 U.S.C. 101.

35 U.S.C. 101 enumerates four categories of subject matter that Congress deemed to be appropriate subject matter for a patent: processes, machines, manufactures and compositions of matter. As explained by the courts, these “four categories together describe the exclusive reach of patentable subject matter. If a claim covers material not found in any of the four statutory categories, that claim falls outside the plainly expressed scope of § 101 even if the subject matter is otherwise new and useful.” In re Nuijten, 500 F.3d 1346, 1354, 84 USPQ2d 1495, 1500 (Fed. Cir. 2007).

Jump to MPEP SourcePatent EligibilityStatutory Categories of InventionUtility Requirement
StatutoryRecommendedAlways
[mpep-2106-03-12871e1e9a4f6fa21538f49c]
Claim to Computer Readable Medium Including Transitory Signal Not Statutory
Note:
A claim to a computer readable medium that includes transitory forms of signal transmission, such as carrier waves, is not statutory and should be rejected under 35 U.S.C. 101.

For example, the BRI of machine readable media can encompass non-statutory transitory forms of signal transmission, such as a propagating electrical or electromagnetic signal per se. See In re Nuijten, 500 F.3d 1346, 84 USPQ2d 1495 (Fed. Cir. 2007). When the BRI encompasses transitory forms of signal transmission, a rejection under 35 U.S.C. 101 as failing to claim statutory subject matter would be appropriate. Thus, a claim to a computer readable medium that can be a compact disc or a carrier wave covers a non-statutory embodiment and therefore should be rejected under 35 U.S.C. 101 as being directed to non-statutory subject matter. See, e.g., Mentor Graphics v. EVE-USA, Inc., 851 F.3d at 1294-95, 112 USPQ2d at 1134 (claims to a “machine-readable medium” were non-statutory, because their scope encompassed both statutory random-access memory and non-statutory carrier waves).

Jump to MPEP SourcePatent EligibilityMachineStatutory Categories of Invention
Topic

Statutory Categories of Invention

2 rules
StatutoryInformativeAlways
[mpep-2106-03-7ac1c10ce46d1302b6c020af]
Claims Outside Statutory Categories Not Eligible
Note:
A claim that does not cover material in the four statutory categories of invention (processes, machines, manufactures, or compositions) is ineligible for patent protection, even if new and useful.

35 U.S.C. 101 enumerates four categories of subject matter that Congress deemed to be appropriate subject matter for a patent: processes, machines, manufactures and compositions of matter. As explained by the courts, these “four categories together describe the exclusive reach of patentable subject matter. If a claim covers material not found in any of the four statutory categories, that claim falls outside the plainly expressed scope of § 101 even if the subject matter is otherwise new and useful.” In re Nuijten, 500 F.3d 1346, 1354, 84 USPQ2d 1495, 1500 (Fed. Cir. 2007).

Jump to MPEP SourceStatutory Categories of InventionUtility RequirementPatent Eligibility
StatutoryInformativeAlways
[mpep-2106-03-863049a2309c02d818219cb7]
Requirement for Tangible Articles
Note:
Examiners must verify that inventions claimed as manufactures are physical and tangible, resulting from artificial means.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A manufacture is “a tangible article that is given a new form, quality, property, or combination through man-made or artificial means.” Digitech, 758 F.3d at 1349, 111 USPQ2d at 1719-20 (citing Diamond v. Chakrabarty, 447 U.S. 303, 308, 206 USPQ 193, 197 (1980)). As the courts have explained, manufactures are articles that result from the process of manufacturing, i.e., they were produced “from raw or prepared materials by giving to these materials new forms, qualities, properties, or combinations, whether by hand-labor or by machinery.” Samsung Electronics Co. v. Apple Inc., 137 S. Ct. 429, 120 USPQ2d 1749, 1752-3 (2016) (quoting Diamond v. Chakrabarty, 447 U. S. 303, 308, 206 USPQ 193, 196-97 (1980)); Nuijten, 500 F.3d at 1356-57, 84 USPQ2d at 1502. Manufactures also include “the parts of a machine considered separately from the machine itself.” Samsung Electronics, 137 S. Ct. at 435, 120 USPQ2d at 1753 (quoting 1 W. Robinson, The Law of Patents for Useful Inventions §183, p. 270 (1890)).

Jump to MPEP SourceStatutory Categories of InventionMachineManufacture (Article of Manufacture)
Topic

Process (Method)

2 rules
StatutoryRequiredAlways
[mpep-2106-03-2a1d10b7eafaef2b122566a2]
Requirement for Physical or Tangible Products
Note:
Examiners must verify that claimed inventions fall within machines, manufactures, or compositions of matter and are in a physical or tangible form.
The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form.
  • • A machine is a “concrete thing, consisting of parts, or of certain devices and combination of devices.” Digitech, 758 F.3d at 1348-49, 111 USPQ2d at 1719 (quoting Burr v. Duryee, 68 U.S. 531, 570, 17 L. Ed. 650, 657 (1863)). This category “includes every mechanical device or combination of mechanical powers and devices to perform some function and produce a certain effect or result.” Nuijten, 500 F.3d at 1355, 84 USPQ2d at 1501 (quoting Corning v. Burden, 56 U.S. 252, 267, 14 L. Ed. 683, 690 (1854)).
  • • A manufacture is “a tangible article that is given a new form, quality, property, or combination through man-made or artificial means.” Digitech, 758 F.3d at 1349, 111 USPQ2d at 1719-20 (citing Diamond v. Chakrabarty, 447 U.S. 303, 308, 206 USPQ 193, 197 (1980)). As the courts have explained, manufactures are articles that result from the process of manufacturing, i.e., they were produced “from raw or prepared materials by giving to these materials new forms, qualities, properties, or combinations, whether by hand-labor or by machinery.” Samsung Electronics Co. v. Apple Inc., 137 S. Ct. 429, 120 USPQ2d 1749, 1752-3 (2016) (quoting Diamond v. Chakrabarty, 447 U. S. 303, 308, 206 USPQ 193, 196-97 (1980)); Nuijten, 500 F.3d at 1356-57, 84 USPQ2d at 1502. Manufactures also include “the parts of a machine considered separately from the machine itself.” Samsung Electronics, 137 S. Ct. at 435, 120 USPQ2d at 1753 (quoting 1 W. Robinson, The Law of Patents for Useful Inventions §183, p. 270 (1890)).
  • • A composition of matter is a “combination of two or more substances and includes all composite articles.” Digitech, 758 F.3d at 1348-49, 111 USPQ2d at 1719 (citation omitted). This category includes all compositions of two or more substances and all composite articles, “'whether they be the results of chemical union or of mechanical mixture, or whether they be gases, fluids, powders or solids.'” Chakrabarty, 447 U.S. at 308, 206 USPQ at 197 (quoting Shell Dev. Co. v. Watson, 149 F. Supp. 279, 280 (D.D.C. 1957); id. at 310 holding genetically modified microorganism to be a manufacture or composition of matter).
Jump to MPEP SourceProcess (Method)Statutory Categories of InventionPatent Eligibility
StatutoryInformativeAlways
[mpep-2106-03-11a612c46703435a0904fc1b]
Requirement for Tangible Articles Produced from Raw Materials
Note:
The rule requires that a claimed invention must be a tangible article produced from raw materials through manufacturing processes, including hand labor or machinery.

The other three categories (machines, manufactures and compositions of matter) define the types of physical or tangible “things” or “products” that Congress deemed appropriate to patent. Digitech Image Techs. v. Electronics for Imaging, 758 F.3d 1344, 1348, 111 USPQ2d 1717, 1719 (Fed. Cir. 2014) (“For all categories except process claims, the eligible subject matter must exist in some physical or tangible form.”). Thus, when determining whether a claimed invention falls within one of these three categories, examiners should verify that the invention is to at least one of the following categories and is claimed in a physical or tangible form. • A manufacture is “a tangible article that is given a new form, quality, property, or combination through man-made or artificial means.” Digitech, 758 F.3d at 1349, 111 USPQ2d at 1719-20 (citing Diamond v. Chakrabarty, 447 U.S. 303, 308, 206 USPQ 193, 197 (1980)). As the courts have explained, manufactures are articles that result from the process of manufacturing, i.e., they were produced “from raw or prepared materials by giving to these materials new forms, qualities, properties, or combinations, whether by hand-labor or by machinery.” Samsung Electronics Co. v. Apple Inc., 137 S. Ct. 429, 120 USPQ2d 1749, 1752-3 (2016) (quoting Diamond v. Chakrabarty, 447 U. S. 303, 308, 206 USPQ 193, 196-97 (1980)); Nuijten, 500 F.3d at 1356-57, 84 USPQ2d at 1502. Manufactures also include “the parts of a machine considered separately from the machine itself.” Samsung Electronics, 137 S. Ct. at 435, 120 USPQ2d at 1753 (quoting 1 W. Robinson, The Law of Patents for Useful Inventions §183, p. 270 (1890)).

Jump to MPEP SourceProcess (Method)Statutory Categories of InventionMachine
Topic

AIA Overview and Effective Dates

2 rules
StatutoryInformativeAlways
[mpep-2106-03-27eb7ff870880fa0df89fac9]
Claims Not Directed to Statutory Categories
Note:
This rule outlines examples of claims that do not meet the statutory categories for patent eligibility, including data, software per se, signals, and humans.
Non-limiting examples of claims that are not directed to any of the statutory categories include:
  • • Products that do not have a physical or tangible form, such as information (often referred to as “data per se”) or a computer program per se (often referred to as “software per se”) when claimed as a product without any structural recitations;
  • • Transitory forms of signal transmission (often referred to as “signals per se”), such as a propagating electrical or electromagnetic signal or carrier wave; and
  • • Subject matter that the statute expressly prohibits from being patented, such as humans per se, which are excluded under The Leahy-Smith America Invents Act (AIA), Public Law 112-29, sec. 33, 125 Stat. 284 (September 16, 2011).
Jump to MPEP SourceAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2106-03-4297178626f8514675506e9b]
Exclusion of Human Per Se from Patenting
Note:
This rule prohibits the patenting of humans per se, as explicitly excluded by The Leahy-Smith America Invents Act (AIA).

Non-limiting examples of claims that are not directed to any of the statutory categories include • Subject matter that the statute expressly prohibits from being patented, such as humans per se, which are excluded under The Leahy-Smith America Invents Act (AIA), Public Law 112-29, sec. 33, 125 Stat. 284 (September 16, 2011).

Jump to MPEP SourceAIA Overview and Effective DatesAIA vs Pre-AIA Practice

Citations

Primary topicCitation
35 U.S.C. § 100(b)
35 U.S.C. 101 – Patent Eligibility
Machine
Patent Eligibility
Statutory Categories of Invention
35 U.S.C. § 101
Machine
Manufacture (Article of Manufacture)
Process (Method)
Statutory Categories of Invention
35 U.S.C. § 183
Patent EligibilityMPEP § 2106
Patent EligibilityMPEP § 2106.07(a)(1)
MPEP § 2111
Gottschalk v. Benson, 409 U.S. 63, 70, 175 USPQ 673, 676 (1972)
35 U.S.C. 101 – Patent Eligibility
Machine
Statutory Categories of Invention
In re Nuijten, 500 F.3d 1346, 84 USPQ2d 1495 (Fed. Cir. 2007)
Mentor Graphics Corp. v. EVE-USA, Inc., 851 F.3d 1275, 1294, 112 USPQ2d 1120, 1133 (Fed. Cir. 2017)
NTP, Inc. v. Research in Motion, Ltd., 418 F.3d 1282, 1316, 75 USPQ2d 1763, 1791 (Fed. Cir. 2005)
Machine
Manufacture (Article of Manufacture)
Process (Method)
Statutory Categories of Invention
citing Diamond v. Chakrabarty, 447 U.S. 303, 308, 206 USPQ 193, 197 (1980)

Source Text from USPTO’s MPEP

This is an exact copy of the MPEP from the USPTO. It is here for your reference to see the section in context.

BlueIron Last Updated: 2026-01-10