Prosecution Insights
Last updated: April 19, 2026
Application No. 18/272,780

COMPUTER-IMPLEMENTED METHOD AND DEVICE FOR RESOLVING CLOSED LOOPS IN AUTOMATIC FAULT TREE ANALYSIS OF A MULTI-COMPONENT SYSTEM

Non-Final OA §102
Filed
Jul 17, 2023
Examiner
SHANMUGASUNDARAM, KANNAN
Art Unit
2168
Tech Center
2100 — Computer Architecture & Software
Assignee
Siemens Industry Software NV
OA Round
1 (Non-Final)
72%
Grant Probability
Favorable
1-2
OA Rounds
3y 9m
To Grant
99%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allow Rate
416 granted / 579 resolved
+16.8% vs TC avg
Strong +37% interview lift
Without
With
+37.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 9m
Avg Prosecution
24 currently pending
Career history
603
Total Applications
across all art units

Statute-Specific Performance

§101
12.2%
-27.8% vs TC avg
§103
48.8%
+8.8% vs TC avg
§102
26.0%
-14.0% vs TC avg
§112
6.3%
-33.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 579 resolved cases

Office Action

§102
DETAILED ACTION Claims 1-4 are pending in the Instant Application. Claims 1-4 are rejected (Non-Final Rejection). 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 . Priority The Instant Application, filed 07/17/2023, is a National Stage entry of PCT/EP2022/050607, International Filing Date 01/13/2022, which claims foreign priority to 21152987.0, filed 01/22/2021 in the European Patent Office. Thus, the earliest effective filing date is 1/22/2021. Information Disclosure Statement The information disclosure statements (IDSs) submitted on 7/17/2023 and 11/12/2025 were considered by the examiner. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claims 1-4 are rejected under 35 U.S.C. 102(a)(1) as being unpatentable by Hӧfig et al. (“Hofig”), European Patent Application No. EP-3579074-A1, published 11 December 2019. As per claim 1, Hofig discloses a computer-implemented method for resolving closed loops in automatic fault tree analysis of a multi-component system ([0012] wherein the method is recited), the method comprising: a. modeling the multi-component system using a fault tree, the fault tree comprising elements associated with components of the multi-component system and interconnections between the elements associated with functional dependencies between the components ([0012] wherein the claim language, most importantly the modeling using the fault tree comprising components and their dependencies is described); b. back-tracing failure propagation paths rom an output element of the fault tree via the interconnections towards one or more input elements of the fault tree ([0012] wherein the back-tracing is described); c. checking, for all failure propagation paths, if the respective failure propagation path contains a closed loop by identifying a downstream element of the respective failure propagation path having a dependency of an output value on an output value of an upstream element-of the failure propagation path ([0012] wherein the checking if the failure propagation path contains a closed loop is described); d. setting the input value corresponding to a loop interconnection of each downstream element to Boolean TRUE ([0012] wherein the limitations for setting the input value to TRUE is recited); e. identifying any Boolean AND-gate having, independently of the specific values of the input elements, no Boolean TRUE as output value ([0012] wherein any Boolean AND-gate having no Boolean TRUE value as output is identified as they are replaced in the prior art); cutting off any Boolean TRUE input to any identified Boolean AND-gate between the respective downstream element and the respective upstream element ([0012] wherein the Boolean TRUE input are cut off to any of the identified Boolean AND-gates); and f. setting the input value of each respective downstream element corresponding to the loop interconnection to Boolean FALSE ([0012] wherein the input value is set to Boolean FALSE as described). As per claim 2, Hofig discloses the method according to claim 1, wherein the fault tree is expressed within Boolean algebra by iteratively expanding the fault tree into Boolean expressions at the elements ([0018] wherein the fault tree is expressed with Boolean expressions and are iteratively expanding). As per claim 3, Hofig discloses the method according to claim 1, wherein the closed loop of the fault tree is associated with a closed-loop control circuitry of the multi-component system ([0019] wherein closed-loop control circuity) . As per claim 4, Hofig discloses a device comprising a processor configured to perform the method according to claim 1. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KANNAN SHANMUGASUNDARAM whose telephone number is (571)270-7763. The examiner can normally be reached M-F 9:00 AM -6:00 PM. 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, Charles Rones can be reached at (571) 272-4085. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /KANNAN SHANMUGASUNDARAM/Primary Examiner, Art Unit 2168
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Prosecution Timeline

Jul 17, 2023
Application Filed
Feb 19, 2026
Non-Final Rejection — §102 (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

1-2
Expected OA Rounds
72%
Grant Probability
99%
With Interview (+37.0%)
3y 9m
Median Time to Grant
Low
PTA Risk
Based on 579 resolved cases by this examiner. Grant probability derived from career allow rate.

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