Prosecution Insights
Last updated: July 17, 2026
Application No. 18/051,944

SYSTEM AND METHOD FOR CARBON DIOXIDE REACTOR CONTROL

Final Rejection §DOUBLEPATENT
Filed
Nov 02, 2022
Priority
Jan 22, 2018 — provisional 62/619,996 +3 more
Examiner
MENDEZ, ZULMARIAM
Art Unit
1794
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Twelve Benefit Corporation
OA Round
2 (Final)
66%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
88%
With Interview

Examiner Intelligence

Grants 66% — above average
66%
Career Allowance Rate
624 granted / 948 resolved
+0.8% vs TC avg
Strong +22% interview lift
Without
With
+22.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
23 currently pending
Career history
981
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
84.3%
+44.3% vs TC avg
§102
6.7%
-33.3% vs TC avg
§112
4.7%
-35.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 948 resolved cases

Office Action

§DOUBLEPATENT
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 . Double Patenting The non-statutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A non-statutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on non-statutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a non-statutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based e-Terminal Disclaimer may be filled out completely online using web-screens. An e-Terminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about e-Terminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 28-34 are rejected on the ground of non-statutory double patenting as being unpatentable over claims 1-4, 11-17, 27, 28, 31 and 32 of U.S. Patent No. 11,512,403. Although the claims at issue are not identical, they are not patentably distinct from each other because they are directed to a method for electrolyzer control comprising: at a first gas-phase electrolyzer, the first gas-phase electrolyzer comprising a cathode layer having a reduction catalyst and an ion-conducting polymer in contact with a polymer electrolyte membrane, accepting a first input comprising gas-phase carbon dioxide; at the first gas-phase electrolyzer, while accepting the first input, under a first set of process conditions, electrochemically producing a first reduction product stream from the first input, wherein the first reduction product stream comprises molecular hydrogen and carbon monoxide, wherein the first reduction product stream defines a first molecular hydrogen-to-carbon monoxide ratio (HCR); and adjusting the HCR during operation of the first gas-phase electrolyzer. Allowable Subject Matter Claims 21-27 and 35-42 are allowed. The following is an examiner’s statement of reasons for allowance: the reasons for allowance set forth in the prior Office Action mailed on September 17, 2025 remain the clearest statement of how the claimed invention defines a non-obvious variation over the prior art, in particular Lecomte and Hori. Nothing in the newly cited references is closer to the claimed invention than the disclosure of the prior art made of record. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Response to Arguments Applicant's arguments filed on December 17, 2025 have been fully considered but they are not persuasive. The applicant argues that non-statutory double patenting rejection should be withdrawn. The US 11,512,403 patent claims are concerned with electrolyzer control at a single electrolyzer and do not require a second electrolyzer. In response, it is noted that claims 28-34 of the present invention are also concerned with electrolyzer control at a single electrolyzer. Therefore, the ODP rejection is still deemed proper and has been maintained for claims 28-34. 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 ZULMARIAM MENDEZ whose telephone number is (571)272-9805. The examiner can normally be reached M-F 8am-4:30p. 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, James Lin can be reached at 571-272-8902. 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. /ZULMARIAM MENDEZ/Primary Examiner, Art Unit 1794
Read full office action

Prosecution Timeline

Nov 02, 2022
Application Filed
Sep 05, 2023
Response after Non-Final Action
Sep 17, 2025
Non-Final Rejection mailed — §DOUBLEPATENT
Dec 17, 2025
Response Filed
Apr 03, 2026
Final Rejection mailed — §DOUBLEPATENT (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
66%
Grant Probability
88%
With Interview (+22.0%)
3y 2m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 948 resolved cases by this examiner. Grant probability derived from career allowance rate.

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