Prosecution Insights
Last updated: September 17, 2026
Application No. 19/080,158

TWO-PHASE CLOSED THERMOSYPHON WITH INTERNAL ADIABATIC SECTION FOR EFFICIENT ULTRA-LONG-DISTANCE HEAT EXCHANGE

Non-Final OA §112
Filed
Mar 14, 2025
Priority
Apr 10, 2024 — CN 202410424226.8 +1 more
Examiner
NIEVES, NELSON J
Art Unit
Tech Center
Assignee
Northwest Institute Of Eco-Environment And Resources Chinese Academy Of Sciences
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
1y 0m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
610 granted / 810 resolved
+15.3% vs TC avg
Strong +16% interview lift
Without
With
+16.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
27 currently pending
Career history
830
Total Applications
across all art units

Statute-Specific Performance

§101
1.5%
-38.5% vs TC avg
§103
47.6%
+7.6% vs TC avg
§102
15.9%
-24.1% vs TC avg
§112
34.4%
-5.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 810 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 1-6 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 applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 1 recites the limitation "a top sealing partition plate and arranged". This limitation is unclear and confusing For examination purposes the limitation will be read as "a top sealing partition plate arranged". Claim 1 recites the limitation "the vapor core pipe". There is insufficient antecedent basis for this limitation in the claim. Claim 1 recites the limitation "the vapor core pipe". There is insufficient antecedent basis for this limitation in the claim. The term “efficient” in claim 1 is a relative term which renders the claim indefinite. The term “efficient” is not defined by the claim, the specification does not provide a standard for ascertaining the requisite degree, and one of ordinary skill in the art would not be reasonably apprised of the scope of the invention. The term “ultra long” in claim 1 is a relative term which renders the claim indefinite. The term “ultra long” is not defined by the claim, the specification does not provide a standard for ascertaining the requisite degree, and one of ordinary skill in the art would not be reasonably apprised of the scope of the invention. Allowable Subject Matter Claims 1-6 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. The following is a statement of reasons for the indication of allowable subject matter: However, none of the reference of record suggest or render obvious the limitation of a cavity enclosed and formed by (i) a portion of the top sealing partition plate, (ii) a portion of the bottom sealing partition plate, (iii) the wall of the two-phase closed thermosyphon, (iv) the vapor guiding core pipe, and (v) the liquid guiding core pipe, the cavity being sealed against the outside, and the top sealing partition plate and the bottom sealing partition plate being sealed against the vapor guiding core pipe and the liquid guiding core pipe, wherein the vapor guiding core pipe has (i) a top in communication with a top portion of the condensation section and (ii) a bottom fixed to the bottom sealing partition plate such that the vapor core pipe is in communication with the evaporation section, and wherein the liquid guiding core pipe has (i) a top fixed to the top sealing partition plate such that the liquid guiding core pipe is in communication with the condensation section and (ii) a bottom in communication with a bottom portion of the evaporation section, in combination with the other claimed elements. Further, it would not have been obvious to a person of ordinary skill in the art to make such modification, absent permissible hindsight. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. (see PTO-829). Any inquiry concerning this communication or earlier communications from the examiner should be directed to NELSON NIEVES whose telephone number is (571)270-0392. The examiner can normally be reached Monday to Friday 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, Frantz Jules can be reached at 571-272-6681. 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. /NELSON J NIEVES/Primary Examiner, Art Unit 3763 9/5/2026
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Prosecution Timeline

Mar 14, 2025
Application Filed
Sep 10, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12736288
HEAT EXCHANGER WITH TUBE BUNDLE COMPRISING AT LEAST TWO SECTIONS
3y 9m to grant Granted Sep 15, 2026
Patent 12736256
HEAT PUMP, METHOD FOR OPERATING A HEAT PUMP, AND TRANSPORTATION VEHICLE WITH A HEAT PUMP
2y 4m to grant Granted Sep 15, 2026
Patent 12736240
AIR CONDITIONER
2y 2m to grant Granted Sep 15, 2026
Patent 12733126
HEAT SINK FILLER FOR MATCHED IMPEDANCE OF AIR FLOW
2y 6m to grant Granted Sep 08, 2026
Patent 12729916
HEAT EXCHANGER AND AIR-CONDITIONING APPARATUS
1y 11m to grant Granted Sep 08, 2026
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
75%
Grant Probability
92%
With Interview (+16.5%)
2y 6m (~1y 0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 810 resolved cases by this examiner. Grant probability derived from career allowance rate.

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