MPEP § 2111.04 — “Adapted to,” “Adapted for,” “Wherein,” “Whereby,” and Contingent Clauses (Annotated Rules)

§2111.04 “Adapted to,” “Adapted for,” “Wherein,” “Whereby,” and Contingent Clauses

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

This page consolidates and annotates all enforceable requirements under MPEP § 2111.04, 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.

“Adapted to,” “Adapted for,” “Wherein,” “Whereby,” and Contingent Clauses

This section addresses “Adapted to,” “Adapted for,” “Wherein,” “Whereby,” and Contingent Clauses. Contains: 1 requirement, 1 guidance statement, and 5 other statements.

Key Rules

Topic

Obviousness

7 rules
MPEP GuidanceInformativeAlways
[mpep-2111-04-1253ec6ef4c9b55850ee56fe]
Contingent Step Performance Not Required in Methods
Note:
When a method claim includes a contingent step, the performance of that step is not required if its condition is not met. However, for system claims, structure must be present to perform the function even if the condition is not satisfied.

See Ex parte Schulhauser, Appeal 2013-007847 (PTAB April 28, 2016) for an analysis of contingent claim limitations in the context of both method claims and system claims. In Schulhauser, both method claims and system claims recited the same contingent step. When analyzing the claimed method as a whole, the PTAB determined that giving the claim its broadest reasonable interpretation, “[i]f the condition for performing a contingent step is not satisfied, the performance recited by the step need not be carried out in order for the claimed method to be performed” (quotation omitted). Schulhauser at 10. When analyzing the claimed system as a whole, the PTAB determined that “[t]he broadest reasonable interpretation of a system claim having structure that performs a function, which only needs to occur if a condition precedent is met, still requires structure for performing the function should the condition occur.” Schulhauser at 14. Therefore "[t]he Examiner did not need to present evidence of the obviousness of the [] method steps of claim 1 that are not required to be performed under a broadest reasonable interpretation of the claim (e.g., instances in which the electrocardiac signal data is not within the threshold electrocardiac criteria such that the condition precedent for the determining step and the remaining steps of claim 1 has not been met);" however to render the claimed system obvious, the prior art must teach the structure that performs the function of the contingent step along with the other recited claim limitations. Schulhauser at 9, 14.

Jump to MPEP SourceObviousnessEx Parte Appeals to PTAB
MPEP GuidanceInformativeAlways
[mpep-2111-04-38ae2a0601c6613eea93e756]
Contingent Step Requirement for System Claims
Note:
System claims with contingent steps must be supported by the prior art's structure performing the function, even if the condition is not met.

See Ex parte Schulhauser, Appeal 2013-007847 (PTAB April 28, 2016) for an analysis of contingent claim limitations in the context of both method claims and system claims. In Schulhauser, both method claims and system claims recited the same contingent step. When analyzing the claimed method as a whole, the PTAB determined that giving the claim its broadest reasonable interpretation, “[i]f the condition for performing a contingent step is not satisfied, the performance recited by the step need not be carried out in order for the claimed method to be performed” (quotation omitted). Schulhauser at 10. When analyzing the claimed system as a whole, the PTAB determined that “[t]he broadest reasonable interpretation of a system claim having structure that performs a function, which only needs to occur if a condition precedent is met, still requires structure for performing the function should the condition occur.” Schulhauser at 14. Therefore "[t]he Examiner did not need to present evidence of the obviousness of the [] method steps of claim 1 that are not required to be performed under a broadest reasonable interpretation of the claim (e.g., instances in which the electrocardiac signal data is not within the threshold electrocardiac criteria such that the condition precedent for the determining step and the remaining steps of claim 1 has not been met);" however to render the claimed system obvious, the prior art must teach the structure that performs the function of the contingent step along with the other recited claim limitations. Schulhauser at 9, 14.

Jump to MPEP SourceObviousnessEx Parte Appeals to PTAB
MPEP GuidanceInformativeAlways
[mpep-2111-04-4332ff737af43777aec214db]
Condition for Contingent Steps Not Required in Method Claims
Note:
If the condition for a contingent step is not met, performing that step is not necessary for the method claim to be considered performed.

See Ex parte Schulhauser, Appeal 2013-007847 (PTAB April 28, 2016) for an analysis of contingent claim limitations in the context of both method claims and system claims. In Schulhauser, both method claims and system claims recited the same contingent step. When analyzing the claimed method as a whole, the PTAB determined that giving the claim its broadest reasonable interpretation, “[i]f the condition for performing a contingent step is not satisfied, the performance recited by the step need not be carried out in order for the claimed method to be performed” (quotation omitted). Schulhauser at 10. When analyzing the claimed system as a whole, the PTAB determined that “[t]he broadest reasonable interpretation of a system claim having structure that performs a function, which only needs to occur if a condition precedent is met, still requires structure for performing the function should the condition occur.” Schulhauser at 14. Therefore "[t]he Examiner did not need to present evidence of the obviousness of the [] method steps of claim 1 that are not required to be performed under a broadest reasonable interpretation of the claim (e.g., instances in which the electrocardiac signal data is not within the threshold electrocardiac criteria such that the condition precedent for the determining step and the remaining steps of claim 1 has not been met);" however to render the claimed system obvious, the prior art must teach the structure that performs the function of the contingent step along with the other recited claim limitations. Schulhauser at 9, 14.

Jump to MPEP SourceObviousnessEx Parte Appeals to PTAB
MPEP GuidanceInformativeAlways
[mpep-2111-04-9594eeec983ca9f9f7b9aadb]
Contingent Step Performance Not Required for Method Claims
Note:
Method claims with contingent steps do not require performance of those steps if their condition is not met, but system claims must include structure for all claimed functions.

See Ex parte Schulhauser, Appeal 2013-007847 (PTAB April 28, 2016) for an analysis of contingent claim limitations in the context of both method claims and system claims. In Schulhauser, both method claims and system claims recited the same contingent step. When analyzing the claimed method as a whole, the PTAB determined that giving the claim its broadest reasonable interpretation, “[i]f the condition for performing a contingent step is not satisfied, the performance recited by the step need not be carried out in order for the claimed method to be performed” (quotation omitted). Schulhauser at 10. When analyzing the claimed system as a whole, the PTAB determined that “[t]he broadest reasonable interpretation of a system claim having structure that performs a function, which only needs to occur if a condition precedent is met, still requires structure for performing the function should the condition occur.” Schulhauser at 14. Therefore "[t]he Examiner did not need to present evidence of the obviousness of the [] method steps of claim 1 that are not required to be performed under a broadest reasonable interpretation of the claim (e.g., instances in which the electrocardiac signal data is not within the threshold electrocardiac criteria such that the condition precedent for the determining step and the remaining steps of claim 1 has not been met);" however to render the claimed system obvious, the prior art must teach the structure that performs the function of the contingent step along with the other recited claim limitations. Schulhauser at 9, 14.

Jump to MPEP SourceObviousnessEx Parte Appeals to PTAB
MPEP GuidanceRecommendedAlways
[mpep-2111-04-62ea590e08111968f47ae2a6]
Structure Required for Conditional Function
Note:
A system claim must include structure to perform a function that is conditional on a precedent condition being met.

See Ex parte Schulhauser, Appeal 2013-007847 (PTAB April 28, 2016) for an analysis of contingent claim limitations in the context of both method claims and system claims. In Schulhauser, both method claims and system claims recited the same contingent step. When analyzing the claimed method as a whole, the PTAB determined that giving the claim its broadest reasonable interpretation, “[i]f the condition for performing a contingent step is not satisfied, the performance recited by the step need not be carried out in order for the claimed method to be performed” (quotation omitted). Schulhauser at 10. When analyzing the claimed system as a whole, the PTAB determined that “[t]he broadest reasonable interpretation of a system claim having structure that performs a function, which only needs to occur if a condition precedent is met, still requires structure for performing the function should the condition occur.” Schulhauser at 14. Therefore "[t]he Examiner did not need to present evidence of the obviousness of the [] method steps of claim 1 that are not required to be performed under a broadest reasonable interpretation of the claim (e.g., instances in which the electrocardiac signal data is not within the threshold electrocardiac criteria such that the condition precedent for the determining step and the remaining steps of claim 1 has not been met);" however to render the claimed system obvious, the prior art must teach the structure that performs the function of the contingent step along with the other recited claim limitations. Schulhauser at 9, 14.

Jump to MPEP SourceObviousnessEx Parte Appeals to PTAB
MPEP GuidanceRequiredAlways
[mpep-2111-04-d11fe36e257052eb3c39f464]
System Claims Require Structure for Contingent Steps
Note:
System claims must include structure that performs the function of contingent steps, even if those steps are not always performed.

See Ex parte Schulhauser, Appeal 2013-007847 (PTAB April 28, 2016) for an analysis of contingent claim limitations in the context of both method claims and system claims. In Schulhauser, both method claims and system claims recited the same contingent step. When analyzing the claimed method as a whole, the PTAB determined that giving the claim its broadest reasonable interpretation, “[i]f the condition for performing a contingent step is not satisfied, the performance recited by the step need not be carried out in order for the claimed method to be performed” (quotation omitted). Schulhauser at 10. When analyzing the claimed system as a whole, the PTAB determined that “[t]he broadest reasonable interpretation of a system claim having structure that performs a function, which only needs to occur if a condition precedent is met, still requires structure for performing the function should the condition occur.” Schulhauser at 14. Therefore "[t]he Examiner did not need to present evidence of the obviousness of the [] method steps of claim 1 that are not required to be performed under a broadest reasonable interpretation of the claim (e.g., instances in which the electrocardiac signal data is not within the threshold electrocardiac criteria such that the condition precedent for the determining step and the remaining steps of claim 1 has not been met);" however to render the claimed system obvious, the prior art must teach the structure that performs the function of the contingent step along with the other recited claim limitations. Schulhauser at 9, 14.

Jump to MPEP SourceObviousnessEx Parte Appeals to PTAB
MPEP GuidanceInformativeAlways
[mpep-2111-04-787ea8d9e200e5db21f87c9f]
Contingent Step Structure Required for System Claims
Note:
For system claims with contingent steps, the prior art must teach the structure that performs the function of the contingent step along with other claim limitations.

See Ex parte Schulhauser, Appeal 2013-007847 (PTAB April 28, 2016) for an analysis of contingent claim limitations in the context of both method claims and system claims. In Schulhauser, both method claims and system claims recited the same contingent step. When analyzing the claimed method as a whole, the PTAB determined that giving the claim its broadest reasonable interpretation, “[i]f the condition for performing a contingent step is not satisfied, the performance recited by the step need not be carried out in order for the claimed method to be performed” (quotation omitted). Schulhauser at 10. When analyzing the claimed system as a whole, the PTAB determined that “[t]he broadest reasonable interpretation of a system claim having structure that performs a function, which only needs to occur if a condition precedent is met, still requires structure for performing the function should the condition occur.” Schulhauser at 14. Therefore "[t]he Examiner did not need to present evidence of the obviousness of the [] method steps of claim 1 that are not required to be performed under a broadest reasonable interpretation of the claim (e.g., instances in which the electrocardiac signal data is not within the threshold electrocardiac criteria such that the condition precedent for the determining step and the remaining steps of claim 1 has not been met);" however to render the claimed system obvious, the prior art must teach the structure that performs the function of the contingent step along with the other recited claim limitations. Schulhauser at 9, 14.

Jump to MPEP SourceObviousnessEx Parte Appeals to PTAB

Citations

Primary topicCitation
MPEP § 2143.03
Griffin v. Bertina, 285 F.3d 1029, 1034, 62 USPQ2d 1431 (Fed. Cir. 2002)
In Hoffer v. Microsoft Corp., 405 F.3d 1326, 1329, 74 USPQ2d 1481, 1483 (Fed. Cir. 2005)
In re Giannelli, 739 F.3d 1375, 1378, 109 USPQ2d 1333, 1336 (Fed. Cir. 2014)

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