Prosecution Insights
Last updated: October 02, 2026
Application No. 18/573,555

COMPONENT FOR AN ELECTROCHEMICAL CELL, REDOX FLOW CELL, AND ELECTROLYSER

Final Rejection §112
Filed
Dec 22, 2023
Priority
Jun 30, 2021 — DE 102021116770.1 +2 more
Examiner
GONZALEZ RAMOS, MAYLA
Art Unit
Tech Center
Assignee
Schaeffler Technologies AG & Co. KG
OA Round
2 (Final)
55%
Grant Probability
Moderate
3-4
OA Rounds
2m
Est. Remaining
68%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allowance Rate
363 granted / 664 resolved
-5.3% vs TC avg
Moderate +14% lift
Without
With
+13.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
46 currently pending
Career history
707
Total Applications
across all art units

Statute-Specific Performance

§101
1.7%
-38.3% vs TC avg
§103
55.8%
+15.8% vs TC avg
§102
14.6%
-25.4% vs TC avg
§112
21.0%
-19.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 664 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 . Status of Claims This action is in response to Applicant’s Request for Reconsideration dated 07/14/2026. Claim(s) 1-3, 7-18 and 20 are currently pending. Claim(s) 1, 7, 12-16 and 20 have been amended. Claim(s) 4-6 and 19 have been canceled. Response to Arguments Applicant’s arguments, see Remarks filed 07/14/2026, with respect to the rejection of claims 1, 3, 4, 7, 9-10, 14, 16 and 18-20 under 35 U.S.C. 102(a)(1) as being anticipated by Kobayashi et al. have been fully considered and are persuasive. The rejection of claims 1, 3, 4, 7, 9-10, 14, 16 and 18-20 under 35 U.S.C. 102(a)(1) has been withdrawn. Applicant’s arguments, see Remarks filed 07/14/2026, with respect to the rejection of claims 1-10, 14 and 16-20 under 35 U.S.C. 103 as being unpatentable over Yano et al. in view of Kobayashi et al. have been fully considered and are persuasive. The rejection of claims 1-10, 14 and 16-20 under 35 U.S.C. 103 has been withdrawn. Examiner notes that the amendments raised new rejections of the claims under 35 U.S.C. 112(b), as set forth above. 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 2, 3, 7, 17 and 18 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. Regarding claim 2 The limitation “wherein the alloy is formed from a tin-nickel alloy” is unclear and therefore renders the claim indefinite. It is unclear if the alloy recited in the instant claim corresponds to the alloy from which the second layer is formed or to the alloy predominantly containing tin of the metal substrate. Appropriate correction and clarification is required. Regarding claim 3 The limitation “wherein the alloy is formed from a copper-tin alloy or a tin-silver alloy or a tin-zinc alloy or a tin-bismuth alloy or a tin-antimony alloy or a tin-cobalt alloy or a nickel-tungsten alloy or a tin-manganese alloy” is unclear and therefore renders the claim indefinite. It is unclear if the alloy recited in the instant claim corresponds to the alloy from which the second layer is formed or to the alloy predominantly containing tin of the metal substrate. Appropriate correction and clarification is required. Regarding claim 7 Claim 7 recites “wherein the metal substrate is formed from a material from the group comprising copper, a copper alloy, nickel, a nickel alloy or low-alloy carbon steel.” However, claim 1 requires the metal substrate to be formed from a material from the group comprising stainless steel, titanium, a titanium alloy, aluminum, an aluminum alloy, or an alloy predominantly containing tin. Therefore, claim 7 is inconsistent with the claim from which it depends. Regarding claim 17 The limitation “wherein the alloy is formed from a tin-nickel alloy” is unclear and therefore renders the claim indefinite. It is unclear if the alloy recited in the instant claim corresponds to the alloy from which the second layer is formed or to the nickel alloy of the metal substrate. Appropriate correction and clarification is required. Regarding claim 18 The limitation “wherein the alloy is formed from a copper-tin alloy or a tin-silver alloy or a tin-zinc alloy or a tin-bismuth alloy or a tin-antimony alloy or a tin-cobalt alloy or a nickel-tungsten alloy or a tin-manganese alloy” is unclear and therefore renders the claim indefinite. It is unclear if the alloy recited in the instant claim corresponds to the alloy from which the second layer is formed or to the nickel alloy of the metal substrate. Appropriate correction and clarification is required. Allowable Subject Matter Claims 1, 8-16 and 20 are allowed. The following is an examiner’s statement of reasons for allowance: Regarding claims 1 and 16 The prior art of record, whether alone or in combination, fails to teach or fairly suggest the combination of the following limitations: (a) wherein the non-metallic particles comprise a proportion of the electrically conductive particles which are formed from at least one material from the group comprising carbon, graphite, carbon nanotubes, carbon fibers, soot, graphene, graphene oxide, metal nitride, or metal carbide; and (b) wherein the non-metallic particles further comprise a proportion of particles formed from at least one material from the group comprising metal sulfide, diamond, metal oxide, mica, or PTFE, in the context of other limitations recited in the claims. Yano teaches a component of an electrochemical cell (corresponding to a separator of a fuel cell) [para. 0059], the component comprising: a metal substrate (the substrate comprises a metal sheet) [para. 0064]; and a layer system (corresponding to a strike layer and a surface coating layer formed on the surface of the substrate) and which is at least partially electroplated onto the metal substrate (the strike layer and the surface coating layer may be formed by electroplating) [paras. 0068, 0079, 0084 and 0106], the layer system comprising a first layer (corresponding to the strike layer) disposed on the metal substrate [para. 0068], and at least one second layer (corresponding to the surface coating layer) disposed on the first layer [para. 0084], the first layer (strike layer) being formed from copper or nickel (the strike layer is preferably a metal layer of Ni, Cu, Ag, Au, or the like or an alloy layer containing at least one selected from these elements) [paras. 0053 and 0100] and the at least one second layer (surface coating layer) being formed from an alloy comprising at least two of the elements tin, copper, nickel, silver, zinc, bismuth, antimony, cobalt, manganese, or tungsten, with non-metallic particles comprising electrically conductive particles embedded in the alloy (the surface coating layer may comprise an alloy layer, a carbon material layer, or a mixed layer thereof, wherein the alloy layer comprises, for example, alloys of Ni-Sn, Cu-Sn, Sn-Ag, Sn-Co, Ni-W, etc., and the carbon material layer includes carbon materials such as graphite, diamond, amorphous carbon, diamond-like carbon, carbon black, fullerene, and carbon nanotube) [paras. 0068, 0070 and 0073]; wherein the metal substrate is formed from a material from the group comprising stainless steel, titanium, a titanium alloy, aluminum, an aluminum alloy, or an alloy predominantly containing tin (titanium, titanium alloy sheet, stainless steel, and the lile) [para. 0064]. Yano further discloses carbon material layers comprising carbon materials such as graphite, diamond, amorphous carbon, diamond-like carbon, carbon black, fullerene, and carbon nanotube [paras. 0068, 0070 and 0073]. Kobayashi teaches a component (corresponding to a separator for a fuel cell) comprising a metal substrate (substrate 2 comprising pure copper or a copper alloy), a first layer (corresponding to diffusion layer 3a) and a second layer (corresponding to first plating layer 3) comprising an alloy (first plating layer 3 is made of a tin alloy) [Figs. 1(a)- 1(b), paras. 0024, 0026-0027 and 0032], wherein non-metallic particles (corresponding to conductive filler 5) comprising electrically conductive particles (suitable fillers include graphite, carbon fibers, metal carbides, and metal borides) are embedded in the alloy of the second layer (3) for improving conductivity [paras. 0034-0035]. While Kobayashi teaches electrically conductive particles embedded in an alloy plating layer, and Yano discloses various carbon materials, metal oxides and mixed coating layers comprising non-metallic materials dispersed in an alloy, the cited art does not teach or fairly suggest the claimed combination of both particle proportions recited in limitations (a) and (b) embedded in the alloy of the same second layer. Claim 16 is allowed for the same reasons as claim 1 above. Regarding claims 8-15 and 20 Claims 8-15 and 20 are allowed for their dependency on claims 1 and 16. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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 MAYLA GONZALEZ RAMOS whose telephone number is (571)272-5054. The examiner can normally be reached Monday - Thursday, 9:00-5:00 - EST. 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, Allison Bourke can be reached at (303)297-4684. 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. /MAYLA GONZALEZ RAMOS/Primary Examiner, Art Unit 1721
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Prosecution Timeline

Dec 22, 2023
Application Filed
Jun 30, 2026
Non-Final Rejection mailed — §112
Jul 14, 2026
Response Filed
Sep 18, 2026
Final Rejection mailed — §112 (current)

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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
68%
With Interview (+13.8%)
2y 12m (~2m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 664 resolved cases by this examiner. Grant probability derived from career allowance rate.

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