Prosecution Insights
Last updated: July 17, 2026
Application No. 17/916,830

MANUFACTURING ARRANGEMENT AND METHOD FOR A FUEL CELL STACK

Non-Final OA §112
Filed
Oct 04, 2022
Priority
Apr 07, 2020 — SE 2050394-2 +1 more
Examiner
LEE, JAMES
Art Unit
1725
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Thomas LYDHIG
OA Round
3 (Non-Final)
74%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
537 granted / 723 resolved
+9.3% vs TC avg
Strong +20% interview lift
Without
With
+19.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
31 currently pending
Career history
759
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
72.5%
+32.5% vs TC avg
§102
9.4%
-30.6% vs TC avg
§112
8.7%
-31.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 723 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 5/13/2026 has been entered. Election/Restrictions Newly submitted claims 31-33 are directed to an invention that is independent or distinct from the invention originally claimed for the following reasons: Claims 31-33 are drawn to a method for manufacturing a fuel cell stack. The Restriction Requirement dated 4/24/2025 set forth a restriction between claims drawn to a manufacturing arrangement and claims drawn to a method for manufacturing a fuel cell stack. The applicants elected Group I directed to a manufacturing arrangement in the reply filed 5/27/2025. Since applicant has received an action on the merits for the originally presented invention, this invention has been constructively elected by original presentation for prosecution on the merits. Accordingly, claims 31-33 are withdrawn from consideration as being directed to a non-elected invention. See 37 CFR 1.142(b) and MPEP § 821.03. To preserve a right to petition, the reply to this action must distinctly and specifically point out supposed errors in the restriction requirement. Otherwise, the election shall be treated as a final election without traverse. Traversal must be timely. Failure to timely traverse the requirement will result in the loss of right to petition under 37 CFR 1.144. If claims are subsequently added, applicant must indicate which of the subsequently added claims are readable upon the elected invention. Should applicant traverse on the ground that the inventions are not patentably distinct, applicant should submit evidence or identify such evidence now of record showing the inventions to be obvious variants or clearly admit on the record that this is the case. In either instance, if the examiner finds one of the inventions unpatentable over the prior art, the evidence or admission may be used in a rejection under 35 U.S.C. 103 or pre-AIA 35 U.S.C. 103(a) of the other invention. 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 16-23 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 16 recites the new limitation “at least one opening for a reactant and/or a coolant, which forms in the fuel cell stack a main supply channel for a reactant and/or a coolant…at least one cut opening for a reactant and/or a coolant”. This limitation is deemed to be new matter because the scope of the new limitation includes an opening for a reactant and coolant; a main supply channel for a reactant and a coolant; and a cut opening for a reactant and a coolant but the instant specification does not support such a limitation. Further, the applicants fail to establish support in the Remarks filed 5/13/2026. Claim 16 also recites the new limitation “the fastening device further comprises a receiving unit in which the membrane electrode assembly and the bipolar plate are received”. This limitation is deemed to be new matter because the instant specification does not support the fastening device comprises the receiving unit. Further, the applicants fail to establish support in the Remarks filed 5/13/2026. Response to Arguments Applicant’s arguments with respect to claim(s) 16-23 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JAMES LEE whose telephone number is (571)270-7937. The examiner can normally be reached M-F: 9AM - 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, NICOLE BUIE-HATCHER can be reached at (571)270-3879. 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. /James Lee/Primary Examiner, Art Unit 1725 6/9/2026
Read full office action

Prosecution Timeline

Oct 04, 2022
Application Filed
Jun 10, 2025
Non-Final Rejection mailed — §112
Oct 10, 2025
Response Filed
Jan 13, 2026
Final Rejection mailed — §112
May 13, 2026
Response after Non-Final Action
May 18, 2026
Request for Continued Examination
May 20, 2026
Response after Non-Final Action
Jun 12, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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Electrode Assemblies Incorporating Ion Exchange Materials
5y 9m to grant Granted Jul 07, 2026
Patent 12658447
STABLE METAL ANODES AND BATTERIES UTILIZING THE SAME
5y 2m to grant Granted Jun 16, 2026
Patent 12658477
ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME
3y 6m to grant Granted Jun 16, 2026
Patent 12651756
Fuel Cell
3y 8m to grant Granted Jun 09, 2026
Patent 12646805
Non-Aqueous Electrolyte Secondary Battery
3y 2m to grant Granted Jun 02, 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
74%
Grant Probability
94%
With Interview (+19.5%)
3y 1m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 723 resolved cases by this examiner. Grant probability derived from career allowance rate.

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