Prosecution Insights
Last updated: April 19, 2026
Application No. 18/567,238

SYSTEM FOR ELECTROCATALYTIC CONVERSION OF CARBON OXIDES TO MULTICARBON PRODUCTS USING A STATIONARY CATHOLYTE LAYER AND RELATED PROCESS

Non-Final OA §112
Filed
Dec 05, 2023
Examiner
CONTRERAS, CIEL P
Art Unit
1794
Tech Center
1700 — Chemical & Materials Engineering
Assignee
The Governing Council of the University of Toronto
OA Round
3 (Non-Final)
54%
Grant Probability
Moderate
3-4
OA Rounds
3y 0m
To Grant
87%
With Interview

Examiner Intelligence

Grants 54% of resolved cases
54%
Career Allow Rate
401 granted / 742 resolved
-11.0% vs TC avg
Strong +33% interview lift
Without
With
+33.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
67 currently pending
Career history
809
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
41.2%
+1.2% vs TC avg
§102
19.5%
-20.5% vs TC avg
§112
31.7%
-8.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 742 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 19 May 2025 has been entered. Response to Amendment Acknowledgment is made to Applicant’s claim amendments received 19 May 2025. Claims 41-60 are currently pending of which claims 41-54 are withdrawn from consideration. Claim Objections Claim 55 is objected to because of the following informalities: At line 21, CO2 should be written with the appropriate subscript. Appropriate correction is required. 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 55-60 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. As to claim 55, at line 3 the claim recites the limitation of “a stationary catholyte layer”; however, later in the claim at line 17, the claim again introduces the limitation of “a stationary catholyte layer”. Therefore, it is unclear as to if the second limitation intends to refer back to the first of to a new and separate limitation. For the purpose of Examination, the claim has been broadly interpreted to include, at least, both of the above interpretations. This further renders indefinite all later limitation of “the stationary catholyte” as to which limitation is intended to be referred back to. This limitation appears in claim 55 at lines 19 and 22 and in claims 59 and 60. Further as to claim 55, the claim recites the limitation "the cathode" in lines 18 and 23. There is insufficient antecedent basis for this limitation in the claim. As to claim 58, the claim recites the limitation "the cathode". There is insufficient antecedent basis for this limitation in the claim. Allowable Subject Matter Claims 55-60 would be allowable if rewritten or amended to overcome the rejections under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. The following is a statement of reasons for the indication of allowable subject matter: the primary reason for the indication of allowable subject matter is the inclusion of the limitation such that the stationary catholyte layer as claimed remains stationary during the entirety of the electroreduction process. Response to Arguments Applicant’s arguments filed 19 May 2025, with respect to the amendments to claims 55-60, have been fully considered and are persuasive. The 35 USC 103 rejections to claims 55-60 presented in the Office Action of 23 January 2025 have been withdrawn. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CIEL P Contreras whose telephone number is (571)270-7946. The examiner can normally be reached M-F 9 AM to 4 PM. 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. /CIEL P CONTRERAS/Primary Examiner, Art Unit 1794
Read full office action

Prosecution Timeline

Dec 05, 2023
Application Filed
Sep 06, 2024
Non-Final Rejection — §112
Dec 13, 2024
Response Filed
Jan 16, 2025
Final Rejection — §112
Mar 17, 2025
Response after Non-Final Action
May 19, 2025
Request for Continued Examination
May 21, 2025
Response after Non-Final Action
Oct 28, 2025
Non-Final Rejection — §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
54%
Grant Probability
87%
With Interview (+33.3%)
3y 0m
Median Time to Grant
High
PTA Risk
Based on 742 resolved cases by this examiner. Grant probability derived from career allow rate.

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