Prosecution Insights
Last updated: April 19, 2026
Application No. 17/916,120

Annular Packing Material, Electrochemical Module, Electrochemical Device, Energy System, Solid Oxide Fuel Cell, and Solid Oxide Electrolysis Cell

Non-Final OA §102§103
Filed
Apr 06, 2023
Examiner
LY, KENDRA
Art Unit
1749
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Osaka Gas Co. Ltd.
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
3y 0m
To Grant
76%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allow Rate
329 granted / 570 resolved
-7.3% vs TC avg
Strong +18% interview lift
Without
With
+18.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
37 currently pending
Career history
607
Total Applications
across all art units

Statute-Specific Performance

§103
61.4%
+21.4% vs TC avg
§102
14.0%
-26.0% vs TC avg
§112
21.2%
-18.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 570 resolved cases

Office Action

§102 §103
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 with traverse of Group 1: claims 1-7 in the reply filed on 12/08/2025 is acknowledged. The traversal is on the grounds that the International Searching Authority found unity of invention to be present when it examined similar claims in the corresponding PCT Application (PCT/JP2021/013832) and the common technical feature of the annular packing material is such that a search for one group will produce results applicable to all groups, based on said annular packing material. These arguments are not persuasive because MPEP 1893.03(d) states “when making a lack of unity requirement, the examiner must (1) list the different groups of claims and (2) explain why each group lacks unity with each other group (i.e., why there is no single general inventive concept) specifically describing the unique special technical feature in each group. The examiner may make a lack of unity requirement in a national stage application even if no such requirement was made by the ISA or IPEA.” and the search for an electrochemical module required by group 2 is not required in group 1; the search for an electrochemical device comprising fuel converter required by group 3 is not required in group 1; the search for an electrochemical device comprising a power converter required by group 4 is not required for group 1, the search for a solid oxide fuel cell having a power generation reaction required by group 5 is not required for group 1, the search for the solid oxide electrolysis cell comprising an electrolysis reaction required by group 6 is not required in group 1 and the conclusion of lack of unity is supported with the reason thereof in the restriction requirement dated 10/06/2025. The requirement is still deemed proper and is therefore made FINAL. Claims 8-16 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected inventions, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on 12/08/2025. 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. Claims 1-5 and 7 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by JP’173 (JP 05-223173). Regarding claims 1-5 and 7, FIG. 2 of JP’173 teaches a packing 7 having a round flat plate ring comprised of a substrate 8 made of soft metal and a coating layer 9 made of hard metal that is formed on both end surfaces of the substrate 8. The coating layer may be aluminum oxide. The substrate 8 may be made of copper. See page 3 of the machine translation. Metal inherently expands thermally. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claims 1-7 are rejected under 35 U.S.C. 103 as being unpatentable over JP’360 (JP S59-62360 U) in view of JP’656 (JP S60-182656 A). Regarding claims 1-7 JP’360 teaches a gasket 9 having a annular shape (FIG. 1 and FIG. 2) comprising heat-resistant bimetal material 9a and 9b made of iron, nickel and iron, copper, etc., page 2 of the machine translation (claim 4). JP’360 teaches insulating layers 10 (FIG. 2), but does not recite the insulating material is a metal oxide. However, JP’656 provides an insulating film 7 made of metal oxide such as alumina to formed on the surface that is to contact with a gasket 2 (FIG. 2 and abstract). It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to provide the insulating layers 10 of the gasket of JP’360 made of metal oxide such as alumina because JP’656 teaches a suitable insulating material provided on the surface of a gasket may be metal oxide. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KENDRA LY whose telephone number is (571)270-7060. The examiner can normally be reached Monday-Friday, 8:00-5:00PM. 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, Katelyn B Smith can be reached at 571-270-5545. 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. /KENDRA LY/Primary Examiner, Art Unit 1749
Read full office action

Prosecution Timeline

Apr 06, 2023
Application Filed
Jan 07, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600177
Tire Comprising at Least One Sidewall with a Protective Protuberance
2y 5m to grant Granted Apr 14, 2026
Patent 12573653
ELECTROCHEMICAL CELL, POWER GENERATION METHOD USING ELECTROCHEMICAL CELL, AND MANUFACTURING METHOD OF HYDROGEN GAS USING ELECTROCHEMICAL CELL
2y 5m to grant Granted Mar 10, 2026
Patent 12552204
PNEUMATIC TIRE
2y 5m to grant Granted Feb 17, 2026
Patent 12545055
TIRE
2y 5m to grant Granted Feb 10, 2026
Patent 12539717
PNEUMATIC TIRE
2y 5m to grant Granted Feb 03, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
58%
Grant Probability
76%
With Interview (+18.4%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 570 resolved cases by this examiner. Grant probability derived from career allow 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