Prosecution Insights
Last updated: April 19, 2026
Application No. 17/533,432

ELECTROCHEMICAL DEHYDROGENATION OF ETHANE TO ETHYLENE USING SOLID OXIDE ELECTROLYZER

Non-Final OA §112
Filed
Nov 23, 2021
Examiner
WONG, EDNA
Art Unit
1795
Tech Center
1700 — Chemical & Materials Engineering
Assignee
UNIVERSITY OF SOUTH CAROLINA
OA Round
6 (Non-Final)
58%
Grant Probability
Moderate
6-7
OA Rounds
3y 1m
To Grant
39%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allow Rate
603 granted / 1035 resolved
-6.7% vs TC avg
Minimal -19% lift
Without
With
+-19.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
42 currently pending
Career history
1077
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
41.5%
+1.5% vs TC avg
§102
16.4%
-23.6% vs TC avg
§112
36.7%
-3.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1035 resolved cases

Office Action

§112
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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 December 3, 2025 has been entered. This is in response to the Amendment dated December 3, 2025. The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office Action. Response to Arguments Claim Rejections - 35 USC § 112 I. Claims 8 and 26 have been 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. The rejection of claims 8 and 26 has been withdrawn in view of Applicant’s aemdnment. II. Claims 1-4, 7-9 and 19-26 have been 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. The rejection of claims 1-4, 7-9 and 19-26 under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, has been withdrawn in view of Applicant’s amendment. Response to Amendment Claim Objections Claims 1, 9, 19-22 and 25-26 are objected to because of the following informalities: Claim 1 line 9, please amend “CO2” to -- CO2 --. line 21, please amend “: and” to a -- . -- (period). Claim 9 line 2, please amend “Ni-NixCu1-x-doped Nbu3(Tio.sMno.2)0.6704-o” to -- Ni-NixCu1-x-doped Nb1.33(Ti0.8Mn0.2)0.67O4-δ --. Claim 19 line 9, please amend “CO2” to -- CO2 --. lines 21-22, please amend “Ni-NixCu1-x-doped Nb1.33(Ti0.8Mn0.2)0.67O4-δ(NTMO)” to -- Ni-NixCu1-x-doped Nb1.33(Ti0.8Mn0.2)0.67O4-δ (NTMO) --. Claim 20 line 1, please amend the number “10” to the number -- 19 --. Claim 21 line 1, please amend the number “10” to the number -- 19 --. Claim 22 line 1, please amend the number “10” to the number -- 19 --. line 2, please insert the word -- to -- after the word “voltage”. Claim 25 line 1, please amend the number “10” to the number -- 19 --. Claim 26 line 1, please amend the number “10” to the number -- 19 --. Appropriate correction is required. Claim Rejections - 35 USC § 112 Claim 24 is 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. Claim 24 lines 1-2, “the redox-reversible ceramic electrode comprises NbTiO” lacks antecedent basis. Antecedent basis must be laid for each recited element in a claim, typically, by introducing each element with the indefinite article (“a” or “an”). See Slimfold Mfg. Co. v. Kincaid Properties, Inc., 626 F. Supp 493, 495 (N.D. Ga. 1985), aff'd, 810 F.2d 1113 (Fed. Cir. 1987) (citing P. Rosenberg, 2 Patent Law Fundamentals § 14.06 (2d. Ed. 1984)). Subsequent mention of an element is to be modified by the definite article “the”, “said” or “the said,” thereby making the latter mention(s) of the element unequivocally referable to its earlier recitation. Allowable Subject Matter The following is a statement of reasons for the indication of allowable subject matter: Claims 1-4, 7 and 8-9 define over the prior art of record because the prior art does not contain any language that teaches or suggests a method for forming an improved fuel cell comprising the steps of configuring, converting, electrochemical pumping and feeding as presently claimed, esp., at least one anode comprising at least one alloy nanoparticle exsolved onto at least one backbone to grow an embedded metal-oxide interface structure, wherein the embedded metal-oxide interface structure facilitates dehydrogenation of ethane to ethylene wherein the said at least one anode further comprises NbTiO. Claims 19-22 and 24-26 define over the prior art of record because the prior art does not contain any language that teaches or suggests a method for forming an improved fuel cell comprising the steps of configuring, converting, electrochemical pumping, feeding and forming as presently claimed, esp., forming the at least one electrode slurry to comprise Ni-NixCu1-x doped Nb1.33(Ti0.8Mn0.2)0.67O4-δ (NTMO) and at least one barium zirconate cerate electrolyte. Therefore, a person skilled in the art would not have been motivated to adopt the above conditions, and a prima facie case of obviousness cannot be established. Claims 1, 9, 19-22 and 25-26 would be allowable if rewritten or amended to overcome the claim objection(s) set forth in this Office action. Claim 24 would be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to EDNA WONG whose telephone number is (571) 272-1349. The examiner can normally be reached Monday-Friday, 7:00 AM- 3:30 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, Luan Van can be reached at (571) 272-8521. 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. /EDNA WONG/Primary Examiner, Art Unit 1795
Read full office action

Prosecution Timeline

Nov 23, 2021
Application Filed
Sep 20, 2022
Non-Final Rejection — §112
Mar 22, 2023
Response Filed
Apr 23, 2023
Final Rejection — §112
Oct 27, 2023
Request for Continued Examination
Oct 30, 2023
Response after Non-Final Action
Dec 31, 2023
Non-Final Rejection — §112
May 06, 2024
Response Filed
May 16, 2024
Non-Final Rejection — §112
Nov 21, 2024
Response Filed
Dec 15, 2024
Final Rejection — §112
Jul 13, 2025
Response after Non-Final Action
Dec 03, 2025
Request for Continued Examination
Jan 23, 2026
Response after Non-Final Action
Mar 11, 2026
Non-Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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ELECTROCHEMICAL OXIDATION OF CYCLOALKENES AND CYCLOALKANES INTO ALPHA, OMEGA-DICARBOXYLIC ACIDS OR INTO KETOCARBOXYLIC ACIDS AND CYCLOALKANONE COMPOUNDS
2y 5m to grant Granted Apr 14, 2026
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ELECTRODEPOSITION OF PURE PHASE SnSb FROM EUTECTIC ETHALINE SOLUTION FOR SODIUM-ION AND LITHIUM-ION BATTERY ANODES
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METHOD FOR PRODUCING ALKALI METAL ALCOHOLATES IN AN ELECTROLYSIS CELL
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Patent 12577688
ELECTROCHEMICAL OXIDATION OF FATTY ACIDS AND FATTY ACID ESTERS TO FORM MONOCARBOXYLIC ACIDS AND ALPHA-OMEGA-DICARBOXYLIC ACIDS
2y 5m to grant Granted Mar 17, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

6-7
Expected OA Rounds
58%
Grant Probability
39%
With Interview (-19.0%)
3y 1m
Median Time to Grant
High
PTA Risk
Based on 1035 resolved cases by this examiner. Grant probability derived from career allow rate.

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