Prosecution Insights
Last updated: April 17, 2026
Application No. 18/218,351

DUAL GEOTHERMAL PUMPED HYDROPOWER ENERGY SYSTEM USING UNDERGROUND RESERVOIRS OR RETIRED MINES

Final Rejection §112
Filed
Jul 05, 2023
Examiner
LANE, DEVON
Art Unit
3763
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
unknown
OA Round
2 (Final)
55%
Grant Probability
Moderate
3-4
OA Rounds
3y 2m
To Grant
70%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allow Rate
422 granted / 765 resolved
-14.8% vs TC avg
Moderate +15% lift
Without
With
+14.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
46 currently pending
Career history
811
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
50.7%
+10.7% vs TC avg
§102
20.5%
-19.5% vs TC avg
§112
27.0%
-13.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 765 resolved cases

Office Action

§112
DETAILED ACTION Priority Please note that, per the communication of 8/1/25, the priority date for this application remains 7/5/23. 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 and 2 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite in that it fails to point out what is included or excluded by the claim language. This claim is an omnibus type claim. Claim 1 includes the phrase “(e.g., at the desired temperature)” which does not have known metes and bounds. The “desired” temperature is unknown. The use of an example creates ambiguity as to what other examples may or may not fall under the scope of the claim. Claim 2 is rejected as the phrase “an apparatus embodying the method of claim 1” does not sufficiently appraise one of ordinary skill as to what are and are not necessary components of the apparatus. The applicant is encourage to refer to U.S. issued patent apparatus claims for guidance on proper claim structure. Notes on Potentially Allowable Subject Matter The following is a statement of reasons for the indication of potentially allowable subject matter: The inclusion in claim 1, along with every other limitation, of pumping water from the second compartment to the upper reservoir or the first compartment does not appear to be taught or fairly suggested by the prior art. It is noted that the 112(b) rejection above must be overcome and that this is a preliminary indication only. Conclusion THIS ACTION IS MADE FINAL. 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 Devon Lane whose telephone number is (571)270-1858. The examiner can normally be reached M-Th, 9-4. 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, Jerry-Daryl Fletcher can be reached at 571.270.5054. 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. /DEVON LANE/ Primary Examiner, Art Unit 3763
Read full office action

Prosecution Timeline

Jul 05, 2023
Application Filed
Mar 24, 2025
Non-Final Rejection — §112
Jun 12, 2025
Interview Requested
Jun 23, 2025
Response Filed
Jun 24, 2025
Examiner Interview Summary
Sep 22, 2025
Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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VERTICAL VAPOR GENERATOR
2y 5m to grant Granted Mar 17, 2026
Patent 12566032
VAPOR CHAMBER ASSEMBLY
2y 5m to grant Granted Mar 03, 2026
Patent 12566035
SIMPLE DISTRIBUTOR FOR INLET MANIFOLD OF MICROCHANNEL HEAT EXCHANGER
2y 5m to grant Granted Mar 03, 2026
Patent 12553670
A COOLING ASSEMBLY
2y 5m to grant Granted Feb 17, 2026
Patent 12553567
ADJUSTABLE ROTOR SUPPORT AND ROTARY HEAT EXCHANGER WITH SUCH SUPPORT
2y 5m to grant Granted Feb 17, 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
55%
Grant Probability
70%
With Interview (+14.8%)
3y 2m
Median Time to Grant
Moderate
PTA Risk
Based on 765 resolved cases by this examiner. Grant probability derived from career allow rate.

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