Prosecution Insights
Last updated: August 18, 2026
Application No. 18/659,344

SYSTEM AND APPARATUS FOR A FLUIDIC HEAT EXCHANGER INCLUDING VENTURI FLOW CHANNELS

Final Rejection §112
Filed
May 09, 2024
Examiner
JONES, GORDON A
Art Unit
3763
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
GM Global Technology Operations LLC
OA Round
2 (Final)
61%
Grant Probability
Moderate
3-4
OA Rounds
11m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 61% of resolved cases
61%
Career Allowance Rate
345 granted / 568 resolved
-9.3% vs TC avg
Strong +38% interview lift
Without
With
+38.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
44 currently pending
Career history
624
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
51.3%
+11.3% vs TC avg
§102
19.6%
-20.4% vs TC avg
§112
28.6%
-11.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 568 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 . 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. Claims 1-7,9-12,14-17 and 19 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor, or for pre-AIA the applicant regards as the invention. Claim 1 recites the limitation of “the flow axis”, wherein it is unclear what “the flow axis” is referring to. Specifically, it is unclear as to what the exact relationship the “the flow axis” have with the “a flow axis” from “each of the plurality of venturi flow channels defines a flow axis”, since the term “the flow axis “ has not differentiated how the “the flow axis” are distinct from the recited “each of the plurality of venturi flow channels defines a flow axis” in the claim. Is the term “the flow axis” referring back to only one flow axis or all of the flow axes? Since the metes and bounds of the limitation cannot be ascertained, the limitation is indefinite and , the claim is rendered indefinite and determined to be an antecedent basis issue). For examination purposes, the phrase has been interpreted as -- each flow axis of the plurality of venturi flow channels -- for clarity.. Claim 1 recites the limitation " the flow axis ". There is insufficient antecedent basis for this limitation in the claim. Claim 15 recites the limitation of “the flow axis”, wherein it is unclear what “the flow axis” is referring to. Specifically, it is unclear as to what the exact relationship the “the flow axis” have with the “a flow axis” from “each of the plurality of venturi flow channels defines a flow axis”, since the term “the flow axis “ has not differentiated how the “the flow axis” are distinct from the recited “each of the plurality of venturi flow channels defines a flow axis” in the claim. Is the term “the flow axis” referring back to only one flow axis or all of the flow axes? Since the metes and bounds of the limitation cannot be ascertained, the limitation is indefinite and , the claim is rendered indefinite and determined to be an antecedent basis issue). For examination purposes, the phrase has been interpreted as -- each flow axis of the plurality of venturi flow channels -- for clarity.. Claim 15 recites the limitation " the flow axis ". There is insufficient antecedent basis for this limitation in the claim. The remaining claims are rejected based on their dependency from a claim that has been rejected. Allowable Subject Matter Claims 1-7, 9-12, 14-17 and 19 would be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. US 11596088 B2. 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 GORDON A JONES whose telephone number is (571)270-1218. The examiner can normally be reached 7:30-5 M-F PST. 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, Len Tran can be reached at 571-272-1184. 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. /GORDON A JONES/ Examiner, Art Unit 3763
Read full office action

Prosecution Timeline

May 09, 2024
Application Filed
Apr 01, 2026
Non-Final Rejection mailed — §112
May 14, 2026
Interview Requested
May 21, 2026
Applicant Interview (Telephonic)
May 21, 2026
Examiner Interview Summary
May 22, 2026
Response Filed
Aug 05, 2026
Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12707596
INTEGRATED PREHEATED PUMP-DRIVEN TWO-PHASE FLOW SYSTEM
1y 11m to grant Granted Aug 11, 2026
Patent 12696424
PASSIVE, POROUS, PHASE-CHANGE COLD PLATE
3y 3m to grant Granted Jul 28, 2026
Patent 12686247
PUMP WITH INTEGRATED VALVE AND TEMPERATURE SENSOR AND A THERMAL MANAGEMENT SYSTEM INCLUDING SUCH A PUMP
3y 9m to grant Granted Jul 21, 2026
Patent 12690167
SUPPORT STRUCTURE OF HEAT DISSIPATION UNIT
3y 2m to grant Granted Jul 21, 2026
Patent 12656055
ROLL-BOND COMPONENT FORMING CART BAY WALLS WITH LIQUID CIRCULATION AND A HIGH EFFICIENCY MICRO-CHILLER HEAT SINK
3y 4m to grant Granted Jun 16, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
61%
Grant Probability
99%
With Interview (+38.0%)
3y 3m (~11m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 568 resolved cases by this examiner. Grant probability derived from career allowance rate.

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