Prosecution Insights
Last updated: April 19, 2026
Application No. 17/604,186

System and Method for Detecting Pacer Spikes to Determine a Paced Rhythm in ECGs

Non-Final OA §112
Filed
Oct 15, 2021
Examiner
MANUEL, GEORGE C
Art Unit
3792
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Tricog Health Pte Ltd
OA Round
2 (Non-Final)
89%
Grant Probability
Favorable
2-3
OA Rounds
2y 6m
To Grant
98%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allow Rate
1154 granted / 1291 resolved
+19.4% vs TC avg
Moderate +9% lift
Without
With
+8.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
27 currently pending
Career history
1318
Total Applications
across all art units

Statute-Specific Performance

§101
2.9%
-37.1% vs TC avg
§103
35.1%
-4.9% vs TC avg
§102
28.3%
-11.7% vs TC avg
§112
9.0%
-31.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1291 resolved cases

Office Action

§112
Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . DETAILED ACTION Response to Arguments Applicant’s arguments, see pages 2-8, filed 10/01/2025, with respect to the rejection(s) of claims 1-12 under 35 U.S.C 101 and 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AlA), first paragraph, and claims 1 and 7 under 35 U.S.C. 102(a)(1) have been fully considered and are persuasive. Therefore, the rejection has been withdrawn. However, upon further consideration, a new ground(s) of rejection is made in view of and 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AlA), second paragraph. Claim Objections Claim 7 is objected to because of the following informalities: In line 7, it appears “spike” should be “cluster”. Appropriate correction is required. Claim Interpretation The following is a quotation of 35 U.S.C. 112(f): (f) Element in Claim for a Combination. – An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The following is a quotation of pre-AIA 35 U.S.C. 112, sixth paragraph: An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The claims in this application are given their broadest reasonable interpretation using the plain meaning of the claim language in light of the specification as it would be understood by one of ordinary skill in the art. The broadest reasonable interpretation of a claim element (also commonly referred to as a claim limitation) is limited by the description in the specification when 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is invoked. As explained in MPEP § 2181, subsection I, claim limitations that meet the following three-prong test will be interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph: (A) the claim limitation uses the term “means” or “step” or a term used as a substitute for “means” that is a generic placeholder (also called a nonce term or a non-structural term having no specific structural meaning) for performing the claimed function; (B) the term “means” or “step” or the generic placeholder is modified by functional language, typically, but not always linked by the transition word “for” (e.g., “means for”) or another linking word or phrase, such as “configured to” or “so that”; and (C) the term “means” or “step” or the generic placeholder is not modified by sufficient structure, material, or acts for performing the claimed function. Use of the word “means” (or “step”) in a claim with functional language creates a rebuttable presumption that the claim limitation is to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites sufficient structure, material, or acts to entirely perform the recited function. Absence of the word “means” (or “step”) in a claim creates a rebuttable presumption that the claim limitation is not to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is not interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites function without reciting sufficient structure, material or acts to entirely perform the recited function. Claim limitations in this application that use the word “means” (or “step”) are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. Conversely, claim limitations in this application that do not use the word “means” (or “step”) are not being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. This application includes one or more claim limitations that do not use the word “means,” but are nonetheless being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, because the claim limitation(s) uses a generic placeholder that is coupled with functional language without reciting sufficient structure to perform the recited function and the generic placeholder is not preceded by a structural modifier. Such claim limitation(s) is/are: "a pacer spike identifier", a cluster identifier", "a pruning module", "a noisy section elimination module", and, "a paced rhythm identifier” in claims 1-12. Because this/these claim limitation(s) is/are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, it/they is/are being interpreted to cover the corresponding structure described in the specification as performing the claimed function, and equivalents thereof. If applicant does not intend to have this/these limitation(s) interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, applicant may: (1) amend the claim limitation(s) to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph (e.g., by reciting sufficient structure to perform the claimed function); or (2) present a sufficient showing that the claim limitation(s) recite(s) sufficient structure to perform the claimed function so as to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim limitations "a pacer spike identifier", a cluster identifier", "a pruning module", "a noisy section elimination module", and, "a paced rhythm identifier” invoke 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. However, the written description fails to disclose the corresponding structure, material, or acts for performing the entire claimed function and to clearly link the structure, material, or acts to the function. The terms, "a pacer spike identifier", a cluster identifier", "a pruning module", "a noisy section elimination module", and, "a paced rhythm identifier", are substitutes for means that are generic placeholders for performing the claimed functions. The generic placeholder is modified by function language [emphasis added], "a pacer spike identifier to identify pacer spikes in the filtered ECG lead", "a cluster identifier to determine one or more clusters of pacer spikes in the ECG lead", "a pruning module to determine one pacer spike corresponding to each cluster of pacer spikes", "a noisy section elimination module for identifying and eliminating pacer spikes in noisy sections in the ECG lead", and "a paced rhythm identifier to determine whether the ECG lead comprises a paced rhythm". For the purposes of the 3 prong analysis (see MPEP 2181(I)), the use of the linking word, "to", is understood to connote that the limitations following said linking word are functional in nature, at least because they describe intended uses. The generic placeholders are not modified by sufficient structure, material, or acts for performing the claimed function. In fact, the terms are not modified by any structure. Therefore, the claims 1-12 are indefinite and are rejected under 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph. MPEP 2185 recites, in relevant part: If a means- (or step-) plus-function limitation recited in a claim is not supported by corresponding structure, material or acts in the specification disclosure, the following rejections under 35 U.S.C. 112 should be considered: C) under 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph, as being indefinite. See Noah Systems v. Intuit, 675 F.3d 1302, 1311-19, 102 USPQ2d 1410, 1415-21 (Fed. Cir. 2012); In re Aoyama, 656 F.3d 1293, 1297-98, 99 U.S.P.Q.2d 1936, 1940 (Fed. Cir. 2011); Finisar Corp. v. DirecTV Group, Inc., 523 F.3d 1323, 1340-41, 86 USPQ2d 1609, 1622-23 (Fed. Cir. 2008); and MPEP § 2181. MPEP 2181(II)(B) recites, in relevant part: For a computer-implemented 35 U.S.C. 112(f) claim limitation, the specification must disclose an algorithm for performing the claimed specific computer function, or else the claim is indefinite under 35 U.S.C. 112(b). See Net MoneyIN, Inc. v. Verisign. Inc., 545 F.3d 1359, 1367, 88 USPQ2d 1751, 1757 (Fed. Cir. 2008). See also In re Aoyama, 656 F.3d 1293, 1297, 99 USPQ2d 1936, 1939 (Fed. Cir. 2011) ("[W]hen the disclosed structure is a computer programmed to carry out an algorithm, ‘the disclosed structure is not the general purpose computer, but rather that special purpose computer programmed to perform the disclosed algorithm.’") (quoting WMS Gaming, Inc. v. Int’l Game Tech., 184 F.3d 1339, 1349, 51 USPQ2d 1385, 1391 (Fed. Cir. 1999)). In the present application, the originally filed specification provides no disclosure of the corresponding structure. Therefore, the means-plus-function terms render the claims indefinite as it cannot be determined what structural elements, or equivalents thereof, are required by the claims. In the event the limitations are understood to be computer limitations (i.e. processor(s) and/or non-transitory software/signals) it does not appear that the present specification has sufficient disclosure and the claims may still be rejectable under 112b. Applicant may: (a) Amend the claim so that the claim limitation will no longer be interpreted as a limitation under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph; (b) Amend the written description of the specification such that it expressly recites what structure, material, or acts perform the entire claimed function, without introducing any new matter (35 U.S.C. 132(a)); or (c) Amend the written description of the specification such that it clearly links the structure, material, or acts disclosed therein to the function recited in the claim, without introducing any new matter (35 U.S.C. 132(a)). If applicant is of the opinion that the written description of the specification already implicitly or inherently discloses the corresponding structure, material, or acts and clearly links them to the function so that one of ordinary skill in the art would recognize what structure, material, or acts perform the claimed function, applicant should clarify the record by either: (a) Amending the written description of the specification such that it expressly recites the corresponding structure, material, or acts for performing the claimed function and clearly links or associates the structure, material, or acts to the claimed function, without introducing any new matter (35 U.S.C. 132(a)); or (b) Stating on the record what the corresponding structure, material, or acts, which are implicitly or inherently set forth in the written description of the specification, perform the claimed function. For more information, see 37 CFR 1.75(d) and MPEP §§ 608.01(o) and 2181. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. McLeod et al (US 2003/0073915) disclose a multi-lead pace detector 78 which functions to identify spikes indicative of pacemaker operation based upon a pacer algorithm. For ECG measurements, Schadt et al (US 2006/0111849) disclose clustering phenotypic vectors using clustering algorithms. Any inquiry concerning this communication or earlier communications from the examiner should be directed to George Manuel whose telephone number is (571) 272-4952. The examiner can normally be reached on regular business days. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Benjamin Klein can be reached on (571) 270-5213. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /George Manuel/ Primary Examiner Art Unit: 3792 12/30/2025
Read full office action

Prosecution Timeline

Oct 15, 2021
Application Filed
Mar 26, 2025
Non-Final Rejection — §112
Oct 01, 2025
Response Filed
Dec 08, 2025
Non-Final Rejection — §112 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
89%
Grant Probability
98%
With Interview (+8.6%)
2y 6m
Median Time to Grant
Moderate
PTA Risk
Based on 1291 resolved cases by this examiner. Grant probability derived from career allow rate.

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