MPEP § 2106.05(h) — Field of Use and Technological Environment (Annotated Rules)

§2106.05(h) Field of Use and Technological Environment

USPTO MPEP version: BlueIron's Update: 2026-01-17

This page consolidates and annotates all enforceable requirements under MPEP § 2106.05(h), 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.

Field of Use and Technological Environment

This section addresses Field of Use and Technological Environment. Contains: 1 prohibition, 2 guidance statements, and 15 other statements.

Key Rules

Topic

Patent Eligibility

14 rules
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-199cad5db89d1e6a6d35694b]
Field of Use Limitations Do Not Integrate Exception
Note:
Limitations indicating a field of use do not integrate a judicial exception into a practical application and are insufficient to show significantly more than the exception itself.

Another consideration when determining whether a claim integrates the judicial exception into a practical application in Step 2A Prong Two or recites significantly more than a judicial exception in Step 2B is whether the additional elements amount to more than generally linking the use of a judicial exception to a particular technological environment or field of use. As explained by the Supreme Court, a claim directed to a judicial exception cannot be made eligible “simply by having the applicant acquiesce to limiting the reach of the patent for the formula to a particular technological use.” Diamond v. Diehr, 450 U.S. 175, 192 n.14, 209 USPQ 1, 10 n. 14 (1981). Thus, limitations that amount to merely indicating a field of use or technological environment in which to apply a judicial exception do not amount to significantly more than the exception itself, and cannot integrate a judicial exception into a practical application.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceProhibitedAlways
[mpep-2106-05-h-e9cb72462f95439874aefa5d]
Field of Use Limitations Do Not Integrate Exception
Note:
Limitations indicating a field of use do not integrate a judicial exception into a practical application and are insufficient to show significantly more than the exception itself.

Another consideration when determining whether a claim integrates the judicial exception into a practical application in Step 2A Prong Two or recites significantly more than a judicial exception in Step 2B is whether the additional elements amount to more than generally linking the use of a judicial exception to a particular technological environment or field of use. As explained by the Supreme Court, a claim directed to a judicial exception cannot be made eligible “simply by having the applicant acquiesce to limiting the reach of the patent for the formula to a particular technological use.” Diamond v. Diehr, 450 U.S. 175, 192 n.14, 209 USPQ 1, 10 n. 14 (1981). Thus, limitations that amount to merely indicating a field of use or technological environment in which to apply a judicial exception do not amount to significantly more than the exception itself, and cannot integrate a judicial exception into a practical application.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-e94003b208c012b5bad8e09e]
Field of Use Limitation Not Sufficient for Patent Eligibility
Note:
The courts hold that limiting an abstract idea to a specific field of use is not enough to make it patentable, as seen in Parker v. Flook.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-61eb78f5fb764395fdb7691a]
Field of Use Limitation Does Not Make Abstract Idea Patentable
Note:
Limiting an abstract idea to a specific field of use does not make it patentable if the additional elements do not add meaningful limitations.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-252b1d79f8677ce16bec4f91]
Field of Use Limitation Is Not Sufficient for Patent Eligibility
Note:
The limitation to a specific field of use, such as petrochemical processes, does not make an abstract idea patentable if it does not alter the process steps or provide an inventive concept.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-0e8a1a15812782dbce5fd824]
Field of Use Limitation Not Sufficient for Patent Eligibility
Note:
A field of use limitation alone is not enough to make an abstract idea patentable.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-d12e410b6d27dd3d0505d668]
Field of Use Limitation Not Sufficient for Patent Eligibility
Note:
The limitation to a specific field of use, such as petrochemical and oil-refining processes, is not enough to make an abstract idea patentable.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceRecommendedAlways
[mpep-2106-05-h-0bdc8da8dbf671f266131dd7]
Field of Use Limitation Is Not Sufficient for Patent Eligibility
Note:
The limitation to a specific field of use is not enough to make an abstract idea patentable, as demonstrated by the Flook case.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-32740320a2232c499ef891af]
Field of Use Limitation Is Not Sufficient for Patent Eligibility
Note:
The limitation to a specific field of use does not make an abstract idea patentable if it merely adds an incidental or token element that does not alter the process steps.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-41ecb8c68d4873fd62be60bf]
Field of Use Limitation Does Not Make Claim Eligible
Note:
A field of use limitation alone is not sufficient to make a claim eligible for patent protection if it does not alter the process steps or provide an inventive concept.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-00ee69fd791614901bacae93]
Field of Use Limitation Not an Inventive Concept
Note:
The Supreme Court found that a field of use limitation alone is not sufficient to transform an abstract idea into patentable subject matter.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-dc71e0f5057b291ba8b8c305]
Field of Use Limitation Is Not Sufficient for Patent Eligibility
Note:
The limitation to a specific field of use does not make an abstract idea patentable if it merely adds an incidental or token element that does not alter the process steps.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-99318c37a5bd92f57361bacc]
Field of Use Limitation Is Not Sufficient for Patent Eligibility
Note:
A field of use limitation is not enough to make an abstract idea patentable if it does not alter the process steps or provide an inventive concept.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-3a24a5c4ddfe09940f16c005]
Field of Use Limitation Is Not Sufficient for Patent Eligibility
Note:
The limitation to a specific field of use does not make an abstract idea patentable if it merely adds an incidental or token element that does not alter the process steps.

The courts often cite to Parker v. Flook as providing a classic example of a field of use limitation. See, e.g., Bilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010) (“ Flook established that limiting an abstract idea to one field of use or adding token postsolution components did not make the concept patentable”) (citing Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)). In Flook, the claim recited steps of calculating an updated value for an alarm limit (a numerical limit on a process variable such as temperature, pressure or flow rate) according to a mathematical formula “in a process comprising the catalytic chemical conversion of hydrocarbons.” 437 U.S. at 586, 198 USPQ at 196. Processes for the catalytic chemical conversion of hydrocarbons were used in the petrochemical and oil-refining fields. Id. Although the applicant argued that limiting the use of the formula to the petrochemical and oil-refining fields should make the claim eligible because this limitation ensured that the claim did not preempt all uses of the formula, the Supreme Court disagreed. 437 U.S. at 588-90, 198 USPQ at 197-98. Instead, the additional element in Flook regarding the catalytic chemical conversion of hydrocarbons was not sufficient to make the claim eligible, because it was merely an incidental or token addition to the claim that did not alter or affect how the process steps of calculating the alarm limit value were performed. Further, the Supreme Court found that this limitation did not amount to an inventive concept. 437 U.S. at 588-90, 198 USPQ at 197-98. The Court reasoned that to hold otherwise would “exalt[] form over substance”, because a competent claim drafter could attach a similar type of limitation to almost any mathematical formula. 437 U.S. at 590, 198 USPQ at 197.

Jump to MPEP SourcePatent Eligibility
Topic

Access to Patent Application Files (MPEP 101-106)

7 rules
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-adb41d2327779e7d02ee7b20]
Limiting Abstract Idea to Technological Environment Not Inventive
Note:
The limitation that merely links an abstract idea to a particular technological environment, such as cellular telephones, does not add an inventive concept and fails to meet the requirements for patent eligibility.

A more recent example of a limitation that does no more than generally link a judicial exception to a particular technological environment is Affinity Labs of Texas v. DirecTV, LLC, 838 F.3d 1253, 120 USPQ2d 1201 (Fed. Cir. 2016). In Affinity Labs, the claim recited a broadcast system in which a cellular telephone located outside the range of a regional broadcaster (1) requests and receives network-based content from the broadcaster via a streaming signal, (2) is configured to wirelessly download an application for performing those functions, and (3) contains a display that allows the user to select particular content. 838 F.3d at 1255-56, 120 USPQ2d at 1202. The court identified the claimed concept of providing out-of-region access to regional broadcast content as an abstract idea, and noted that the additional elements limited the wireless delivery of regional broadcast content to cellular telephones (as opposed to any and all electronic devices such as televisions, cable boxes, computers, or the like). 838 F.3d at 1258-59, 120 USPQ2d at 1204. Although the additional elements did limit the use of the abstract idea, the court explained that this type of limitation merely confines the use of the abstract idea to a particular technological environment (cellular telephones) and thus fails to add an inventive concept to the claims. 838 F.3d at 1259, 120 USPQ2d at 1204.

Jump to MPEP SourceAccess to Patent Application Files (MPEP 101-106)
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-ad791fdc7924b76cd23a51a1]
Limiting Abstract Ideas to Specific Technologies Does Not Add Inventive Concept
Note:
The rule states that limiting an abstract idea to a specific technological environment, such as cellular telephones, does not add an inventive concept to the claims.

A more recent example of a limitation that does no more than generally link a judicial exception to a particular technological environment is Affinity Labs of Texas v. DirecTV, LLC, 838 F.3d 1253, 120 USPQ2d 1201 (Fed. Cir. 2016). In Affinity Labs, the claim recited a broadcast system in which a cellular telephone located outside the range of a regional broadcaster (1) requests and receives network-based content from the broadcaster via a streaming signal, (2) is configured to wirelessly download an application for performing those functions, and (3) contains a display that allows the user to select particular content. 838 F.3d at 1255-56, 120 USPQ2d at 1202. The court identified the claimed concept of providing out-of-region access to regional broadcast content as an abstract idea, and noted that the additional elements limited the wireless delivery of regional broadcast content to cellular telephones (as opposed to any and all electronic devices such as televisions, cable boxes, computers, or the like). 838 F.3d at 1258-59, 120 USPQ2d at 1204. Although the additional elements did limit the use of the abstract idea, the court explained that this type of limitation merely confines the use of the abstract idea to a particular technological environment (cellular telephones) and thus fails to add an inventive concept to the claims. 838 F.3d at 1259, 120 USPQ2d at 1204.

Jump to MPEP SourceAccess to Patent Application Files (MPEP 101-106)
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-0be9e162994b6e51789fb395]
Limiting Abstract Ideas to Technological Environments Fails to Add Inventive Concept
Note:
This rule states that limitations which merely confine an abstract idea to a specific technological environment do not add an inventive concept and thus fail to save the claims from being deemed ineligible for patenting.

A more recent example of a limitation that does no more than generally link a judicial exception to a particular technological environment is Affinity Labs of Texas v. DirecTV, LLC, 838 F.3d 1253, 120 USPQ2d 1201 (Fed. Cir. 2016). In Affinity Labs, the claim recited a broadcast system in which a cellular telephone located outside the range of a regional broadcaster (1) requests and receives network-based content from the broadcaster via a streaming signal, (2) is configured to wirelessly download an application for performing those functions, and (3) contains a display that allows the user to select particular content. 838 F.3d at 1255-56, 120 USPQ2d at 1202. The court identified the claimed concept of providing out-of-region access to regional broadcast content as an abstract idea, and noted that the additional elements limited the wireless delivery of regional broadcast content to cellular telephones (as opposed to any and all electronic devices such as televisions, cable boxes, computers, or the like). 838 F.3d at 1258-59, 120 USPQ2d at 1204. Although the additional elements did limit the use of the abstract idea, the court explained that this type of limitation merely confines the use of the abstract idea to a particular technological environment (cellular telephones) and thus fails to add an inventive concept to the claims. 838 F.3d at 1259, 120 USPQ2d at 1204.

Jump to MPEP SourceAccess to Patent Application Files (MPEP 101-106)
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-a2ec3de7c7c9497348f0994d]
Limitation to Cellular Telephones for Abstract Ideas
Note:
The rule requires that limitations to the use of abstract ideas, such as providing out-of-region access to regional broadcast content, must be confined to specific technological environments like cellular telephones.

A more recent example of a limitation that does no more than generally link a judicial exception to a particular technological environment is Affinity Labs of Texas v. DirecTV, LLC, 838 F.3d 1253, 120 USPQ2d 1201 (Fed. Cir. 2016). In Affinity Labs, the claim recited a broadcast system in which a cellular telephone located outside the range of a regional broadcaster (1) requests and receives network-based content from the broadcaster via a streaming signal, (2) is configured to wirelessly download an application for performing those functions, and (3) contains a display that allows the user to select particular content. 838 F.3d at 1255-56, 120 USPQ2d at 1202. The court identified the claimed concept of providing out-of-region access to regional broadcast content as an abstract idea, and noted that the additional elements limited the wireless delivery of regional broadcast content to cellular telephones (as opposed to any and all electronic devices such as televisions, cable boxes, computers, or the like). 838 F.3d at 1258-59, 120 USPQ2d at 1204. Although the additional elements did limit the use of the abstract idea, the court explained that this type of limitation merely confines the use of the abstract idea to a particular technological environment (cellular telephones) and thus fails to add an inventive concept to the claims. 838 F.3d at 1259, 120 USPQ2d at 1204.

Jump to MPEP SourceAccess to Patent Application Files (MPEP 101-106)
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-fe16f69314c5f9b82fa7ce43]
Limitation to Particular Technological Environment Does Not Add Inventive Concept
Note:
A limitation that merely confines an abstract idea to a particular technological environment does not add an inventive concept to the claims.

A more recent example of a limitation that does no more than generally link a judicial exception to a particular technological environment is Affinity Labs of Texas v. DirecTV, LLC, 838 F.3d 1253, 120 USPQ2d 1201 (Fed. Cir. 2016). In Affinity Labs, the claim recited a broadcast system in which a cellular telephone located outside the range of a regional broadcaster (1) requests and receives network-based content from the broadcaster via a streaming signal, (2) is configured to wirelessly download an application for performing those functions, and (3) contains a display that allows the user to select particular content. 838 F.3d at 1255-56, 120 USPQ2d at 1202. The court identified the claimed concept of providing out-of-region access to regional broadcast content as an abstract idea, and noted that the additional elements limited the wireless delivery of regional broadcast content to cellular telephones (as opposed to any and all electronic devices such as televisions, cable boxes, computers, or the like). 838 F.3d at 1258-59, 120 USPQ2d at 1204. Although the additional elements did limit the use of the abstract idea, the court explained that this type of limitation merely confines the use of the abstract idea to a particular technological environment (cellular telephones) and thus fails to add an inventive concept to the claims. 838 F.3d at 1259, 120 USPQ2d at 1204.

Jump to MPEP SourceAccess to Patent Application Files (MPEP 101-106)
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-137115e026602a106a6f85fc]
Limitation to Cellular Telephones Does Not Add Inventive Concept
Note:
The limitation to cellular telephones does not add an inventive concept and fails to transform the abstract idea into patentable subject matter.

A more recent example of a limitation that does no more than generally link a judicial exception to a particular technological environment is Affinity Labs of Texas v. DirecTV, LLC, 838 F.3d 1253, 120 USPQ2d 1201 (Fed. Cir. 2016). In Affinity Labs, the claim recited a broadcast system in which a cellular telephone located outside the range of a regional broadcaster (1) requests and receives network-based content from the broadcaster via a streaming signal, (2) is configured to wirelessly download an application for performing those functions, and (3) contains a display that allows the user to select particular content. 838 F.3d at 1255-56, 120 USPQ2d at 1202. The court identified the claimed concept of providing out-of-region access to regional broadcast content as an abstract idea, and noted that the additional elements limited the wireless delivery of regional broadcast content to cellular telephones (as opposed to any and all electronic devices such as televisions, cable boxes, computers, or the like). 838 F.3d at 1258-59, 120 USPQ2d at 1204. Although the additional elements did limit the use of the abstract idea, the court explained that this type of limitation merely confines the use of the abstract idea to a particular technological environment (cellular telephones) and thus fails to add an inventive concept to the claims. 838 F.3d at 1259, 120 USPQ2d at 1204.

Jump to MPEP SourceAccess to Patent Application Files (MPEP 101-106)
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-601590e369fcc50bdb5a7d30]
Limitation to Particular Technological Environment
Note:
A claim limitation that merely confines an abstract idea to a specific technological environment does not add an inventive concept.

A more recent example of a limitation that does no more than generally link a judicial exception to a particular technological environment is Affinity Labs of Texas v. DirecTV, LLC, 838 F.3d 1253, 120 USPQ2d 1201 (Fed. Cir. 2016). In Affinity Labs, the claim recited a broadcast system in which a cellular telephone located outside the range of a regional broadcaster (1) requests and receives network-based content from the broadcaster via a streaming signal, (2) is configured to wirelessly download an application for performing those functions, and (3) contains a display that allows the user to select particular content. 838 F.3d at 1255-56, 120 USPQ2d at 1202. The court identified the claimed concept of providing out-of-region access to regional broadcast content as an abstract idea, and noted that the additional elements limited the wireless delivery of regional broadcast content to cellular telephones (as opposed to any and all electronic devices such as televisions, cable boxes, computers, or the like). 838 F.3d at 1258-59, 120 USPQ2d at 1204. Although the additional elements did limit the use of the abstract idea, the court explained that this type of limitation merely confines the use of the abstract idea to a particular technological environment (cellular telephones) and thus fails to add an inventive concept to the claims. 838 F.3d at 1259, 120 USPQ2d at 1204.

Jump to MPEP SourceAccess to Patent Application Files (MPEP 101-106)
Topic

Responding to 101 Rejections

3 rules
MPEP GuidanceRecommendedAlways
[mpep-2106-05-h-60118c2e1cdada530dd6d8cd]
Explain Why Technological Environment Does Not Limit Claim
Note:
Examiners must explain why claim limitations linking an abstract idea to a specific technological environment do not meaningfully limit the claim.

For claim limitations that generally link the use of the judicial exception to a particular technological environment or field of use, examiners should explain in an eligibility rejection why they do not meaningfully limit the claim. For example, an examiner could explain that employing generic computer functions to execute an abstract idea, even when limiting the use of the idea to one particular environment, does not add significantly more, similar to how limiting the abstract idea in Flook to petrochemical and oil-refining industries was insufficient. For more information on formulating a subject matter eligibility rejection, see MPEP § 2106.07(a).

Jump to MPEP SourceResponding to 101 RejectionsField of Use and Insignificant Extra-Solution ActivityPatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-2b1a5c12838fa431e39bd829]
Limiting Abstract Ideas to Specific Environments Does Not Add Significance
Note:
Examiners should explain that limiting an abstract idea to a specific technological environment or field does not add significantly more, similar to the Flook case.

For claim limitations that generally link the use of the judicial exception to a particular technological environment or field of use, examiners should explain in an eligibility rejection why they do not meaningfully limit the claim. For example, an examiner could explain that employing generic computer functions to execute an abstract idea, even when limiting the use of the idea to one particular environment, does not add significantly more, similar to how limiting the abstract idea in Flook to petrochemical and oil-refining industries was insufficient. For more information on formulating a subject matter eligibility rejection, see MPEP § 2106.07(a).

Jump to MPEP SourceResponding to 101 RejectionsField of Use and Insignificant Extra-Solution ActivityPatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2106-05-h-e8493c65179b8cc5e45c785d]
Claim Limitations Not Meaningfully Limiting Abstract Idea
Note:
Examiners should explain why claim limitations that merely use generic computer functions to execute an abstract idea do not add significantly more, even when limiting the idea to a particular field.

For claim limitations that generally link the use of the judicial exception to a particular technological environment or field of use, examiners should explain in an eligibility rejection why they do not meaningfully limit the claim. For example, an examiner could explain that employing generic computer functions to execute an abstract idea, even when limiting the use of the idea to one particular environment, does not add significantly more, similar to how limiting the abstract idea in Flook to petrochemical and oil-refining industries was insufficient. For more information on formulating a subject matter eligibility rejection, see MPEP § 2106.07(a).

Jump to MPEP SourceResponding to 101 RejectionsPatent Eligibility

Citations

Primary topicCitation
MPEP § 2106.05(g)
Responding to 101 RejectionsMPEP § 2106.07(a)
Patent EligibilityBilski v. Kappos, 561 U.S. 593, 612, 95 USPQ2d 1001, 1010 (2010)
Intellectual Ventures I v. Capital One Bank, 792 F.3d 1363, 1367, 115 USPQ2d 1636, 1640 (Fed. Cir. 2015)
Ultramercial, Inc. v. Hulu, LLC, 772 F.3d 709, 716, 112 USPQ2d 1750, 1755 (Fed. Cir. 2014)
Patent Eligibilityciting Parker v. Flook, 437 U.S. 584, 198 USPQ 193 (1978)
Access to Patent Application Files (MPEP 101-106)technological environment is Affinity Labs of Texas v. DirecTV, LLC, 838 F.3d 1253, 120 USPQ2d 1201 (Fed. Cir. 2016)

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: 2026-01-17