Prosecution Insights
Last updated: April 19, 2026
Application No. 18/101,966

ENGINE CASING WASTE HEAT RECIRCULATION LOOP AND ASSOCIATED METHOD

Final Rejection §112
Filed
Jan 26, 2023
Examiner
FLORES, JUAN G
Art Unit
3745
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
General Electric Deutschland Holding GmbH
OA Round
6 (Final)
79%
Grant Probability
Favorable
7-8
OA Rounds
2y 10m
To Grant
94%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allow Rate
602 granted / 759 resolved
+9.3% vs TC avg
Moderate +15% lift
Without
With
+14.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
24 currently pending
Career history
783
Total Applications
across all art units

Statute-Specific Performance

§101
1.9%
-38.1% vs TC avg
§103
41.4%
+1.4% vs TC avg
§102
21.9%
-18.1% vs TC avg
§112
29.0%
-11.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 759 resolved cases

Office Action

§112
DETAILED ACTION 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 . Response to Arguments Applicant’s arguments, see Remarks, filed 29 December 2025, with respect to the rejection(s) of claim(s) under 35 USC 103 have been fully considered and are persuasive. Therefore, the rejection has been withdrawn based on the centrifugal compressor limitations. However, upon further consideration, a new ground(s) of rejection is made in view of 35 USC 112, see details below. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1, 3-10 and 21 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Claim 1, and claims 3-10, 21 via dependency, recite a centrifugal compressor, however, the original disclosure does not provide support to said centrifugal compressor. Note that Fig.1 discloses an axial compressor and Fig.4-5 disclose a centrifugal pump but not a centrifugal compressor as recited in the claims. Furthermore, the specification does not recite centrifugal when describing the compressor or pump. For these reasons the original disclosure/specification fails to reasonably convey to one skilled in the art that the inventor(s) had possession of the claimed invention at the time the application was filed. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JUAN G FLORES whose telephone number is (571)272-3486. The examiner can normally be reached Monday - Friday, 8:30am - 5:30pm Pacific Time. 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, Nathan E Wiehe can be reached at (571) 272-8648. 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. /JUAN G FLORES/Primary Examiner, Art Unit 3745
Read full office action

Prosecution Timeline

Jan 26, 2023
Application Filed
Jan 18, 2024
Non-Final Rejection — §112
Apr 24, 2024
Response Filed
Jul 01, 2024
Final Rejection — §112
Sep 09, 2024
Response after Non-Final Action
Sep 11, 2024
Response after Non-Final Action
Sep 11, 2024
Examiner Interview (Telephonic)
Oct 08, 2024
Request for Continued Examination
Oct 09, 2024
Response after Non-Final Action
Nov 06, 2024
Non-Final Rejection — §112
Feb 12, 2025
Response Filed
Mar 06, 2025
Applicant Interview (Telephonic)
Mar 06, 2025
Final Rejection — §112
May 27, 2025
Applicant Interview (Telephonic)
May 27, 2025
Examiner Interview Summary
Jul 14, 2025
Request for Continued Examination
Jul 15, 2025
Response after Non-Final Action
Aug 26, 2025
Non-Final Rejection — §112
Dec 29, 2025
Response Filed
Feb 13, 2026
Applicant Interview (Telephonic)
Feb 16, 2026
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

7-8
Expected OA Rounds
79%
Grant Probability
94%
With Interview (+14.7%)
2y 10m
Median Time to Grant
High
PTA Risk
Based on 759 resolved cases by this examiner. Grant probability derived from career allow rate.

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