Prosecution Insights
Last updated: September 27, 2026
Application No. 17/800,385

HEAT EXCHANGER

Non-Final OA §102
Filed
Aug 17, 2022
Priority
Feb 19, 2020 — GB 2002302.4 +1 more
Examiner
SCHERMERHORN, JON
Art Unit
3763
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Reaction Engines Limited
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
0m
Est. Remaining
91%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allowance Rate
269 granted / 464 resolved
-12.0% vs TC avg
Strong +33% interview lift
Without
With
+33.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
17 currently pending
Career history
484
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
49.3%
+9.3% vs TC avg
§102
23.0%
-17.0% vs TC avg
§112
26.2%
-13.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 464 resolved cases

Office Action

§102
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 . Election/Restrictions Applicant’s election without traverse of Group I and Species G in the reply filed on 2024 July 19 is acknowledged. Claims 6-7, 14, 17, 19, 21-24, and 28-30 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected group and/or species, there being no allowable generic or linking claim. 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1-5, 8-13, 15-16, 18, 20, and 25-27 are rejected under 35 U.S.C. 102(a)(1) as being clearly anticipated by US 2020/0318913 A1 (herein “Ruiz”) – Figs. 1A, 1B, and 1C shown on the next page. PNG media_image1.png 4096 2180 media_image1.png Greyscale Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Each reference discloses a heat exchanger similar to Applicant’s invention. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Jon T. Schermerhorn Jr. whose telephone number is (571)270-5283. The examiner can normally be reached M-F 9am to 5pm. 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 on (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. /JON T. SCHERMERHORN JR./Primary Examiner, Art Unit 3763
Read full office action

Prosecution Timeline

Aug 17, 2022
Application Filed
Oct 24, 2024
Non-Final Rejection mailed — §102
May 03, 2025
Response after Non-Final Action

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12729915
HEAT EXCHANGER AND REFRIGERATION CYCLE APPARATUS
1y 11m to grant Granted Sep 08, 2026
Patent 12733133
HEAT SINK
1y 11m to grant Granted Sep 08, 2026
Patent 12725855
BATTERY COOLING SYSTEM AND METHOD FOR OPERATING A BATTERY COOLING SYSTEM
2y 10m to grant Granted Sep 01, 2026
Patent 12716613
HEAT EXCHANGER SUPPORT DEVICE
2y 0m to grant Granted Aug 25, 2026
Patent 12710239
ELECTROMECHANICAL CYLINDER, COOLING ASSEMBLY, SYSTEM, AND METHOD
2y 5m to grant Granted Aug 18, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
58%
Grant Probability
91%
With Interview (+33.0%)
3y 4m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 464 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month