Prosecution Insights
Last updated: April 19, 2026
Application No. 18/227,114

ELECTROCATALYSTS FOR THE OXYGEN EVOLUTION REACTION IN ACID CONDITIONS

Non-Final OA §102
Filed
Jul 27, 2023
Examiner
CALDERON, DAVID ANDREW
Art Unit
1742
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Toyota Motor Engineering & Manufacturing North America, Inc.
OA Round
1 (Non-Final)
Grant Probability
Favorable
1-2
OA Rounds
2y 8m
To Grant

Examiner Intelligence

Grants only 0% of cases
0%
Career Allow Rate
0 granted / 0 resolved
-65.0% vs TC avg
Minimal +0% lift
Without
With
+0.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
10 currently pending
Career history
10
Total Applications
across all art units

Statute-Specific Performance

§103
53.9%
+13.9% vs TC avg
§102
26.9%
-13.1% vs TC avg
§112
19.2%
-20.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 0 resolved cases

Office Action

§102
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 . Claim Objections Claim 1 is objected to because of the following informalities: “O7” in line one. The seven should be a subscript. Appropriate correction is required. Claim 9 is objected to because of the following informalities: “SM” in line four. Samarium is written as Sm. Appropriate correction is required. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-6 and 9-20 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by D’Souza et al. (US20150014591). Regarding claim 1, D’Souza et al. discloses a pyrochlore having a structure of AxBy-zCzO7 (page 1, paragraph 0009). In this structure: A can be yttrium which is a rare earth element, B can be molybdenum which is a transition metal, C can ruthenium or iridium. The subscript x must be greater than or equal to 0 and less than or equal to two. The subscript y-z must be greater than or equal to zero and less than or equal to two. The subscript z must be greater than or equal to zero and less than or equal to two. The table below illustrates an example. Letter Element Subscript A (corresponds to RE) Yttrium (Y) x=2 B (corresponds to M) Molybdenum (Mo) z=0.5 y=2, y-z=1.5 C (corresponds to Ru/Ir) Ruthenium (Ru) z=0.5 O Oxygen (O) 7 Final compound = Y2Ru0.5Mo1.5O7. This compound satisfies the formula of claim one when x = 0.25. Regarding claim 2, D’Souza et al. discloses RE that is yttrium or neodyium (page 1, paragraph 0009). Regarding claim 3, D’Souza et al. discloses M that is molybdenum or zirconium (page 1, paragraph 0009). Regarding claim 5, D’Souza et al. discloses a RE that is yttrium and M that is molybdenum (page 1, paragraph 0009). Regarding claim 9, D’Souza et al. discloses a RE that is neodymium and M that is molybdenum or a RE that is neodymium and M that is zirconium (page 1, paragraph 0009). Regarding claim 11, D’Souza et al. discloses the compound with an x value less than or equal to 0.95 and greater than or equal to 0.10 as seen in the table above. Regarding claim 12, D’Souza et al. discloses the compound with an x value less than or equal to 0.85 and greater than or equal to 0.10 as seen in the table above. Regarding claim 13, D’Souza et al. discloses the compound with an x value less than or equal to 0.6 and greater than or equal to 0.2 as seen in the table above. Regarding claim 14, D’Souza et al. discloses a compound that has an x value that is less than or equal to 0.95 and greater than or equal to 0.0 as seen in the table above. The combination of yttrium and molybdenum is disclosed in the patent (page 1, paragraph 009).. Regarding claim 16, D’Souza et al. discloses the compound with an x value less than or equal to 0.80 and greater than or equal to 0.2 as seen in the table above. Regarding claim 17, D’Souza et al. discloses the compound with an x value less than or equal to 0.60 and greater than or equal to 0.2 as seen in the table above. Regarding claim 18, D’Souza et al. discloses a compound that has an x value that is less than or equal to 0.9 and greater than or equal to 0.0 as seen in the table above. The combination of neodymium and molybdenum is disclosed in the patent (page 1, paragraph 009). Regarding claim 20, D’Souza et al. discloses the compound with an x value less than or equal to 0.60 and greater than or equal to 0.2 as seen in the table above. Regarding claim 4, 6, 10, 15, and 19, D’Souza does not calculate an oxygen 2p-band center. However, the reference discloses a synthesized pyrochlore compound containing the same elements in the same amounts. Therefore, it is the position of the examiner that the oxygen 2p-band center would inherently be the same. When the examiner has reason to believe that the functional language asserted to be critical for establishing novelty in a claimed subject matter may in fact be an inherent characteristic of the prior art, the burden of proof is shifted to Applicants to prove that the subject matter shown in the prior art does not possess the characteristics relied upon. In re Fitzgerald et al. 205 USPQ 594. Claims 1-8 and 11-17 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Hoffman et al. (EP0013977). Regarding claim 1, Hoffman et al. discloses a pyrochlore compound (MxBi2-x)(M’yM’’2-y)O7-z (page 3, line 20-36) (page 4, line 1-5). In this structure: M can be yttrium which is a rare earth element, M’ can be chromium which is a transition metal, and M’’ can ruthenium or iridium. The subscript x can be 0-2. The subscript y can be 0-0.5. The subscript z can be 0-1. The table below illustrates an example. Letter Element Subscript M (corresponds to RE) Yttrium (Y) x=2 Bi (Bismuth) Bismuth (Bi) x=2, 2-2=0 M’ (corresponds to M) Chromium (Cr) y=0.5 M’’ (corresponds to Ru/Ir) Ruthenium (Ru) y=0.5, 2-0.5=1.5 O Oxygen (O) z=0, 7-0=7 Final compound = Y2Ru1.5Cr0.5O7. This compound satisfies the formula of claim one when x = 0.75. Regarding claim 2, Hoffman et al. discloses a RE that is yttrium or in the group of rare earth metals (Dy, Er, Eu, Ho, Nd, Pr, Sm, Tb, or Yb) (page 3, line 20-36) (page 4, line 1-5). Regarding claim 3, Hoffman et al. discloses a M that is chromium, titanium, or antimony (page 3, line 20-36) (page 4, line 1-5). Regarding claim 5, Hoffman et al. discloses a RE that is yttrium and M that is titanium, a RE that is holmium and M that is antimony, or a RE that is yttrium and M that is antimony, (page 3, line 20-36) (page 4, line 1-5). Regarding claim 7, Hoffman et al. discloses a RE that is yttrium and M that is chromium, a RE that is holmium and M that is chromium, a RE that is neodymium and M that is antimony, a RE that is samarium and M that is titanium, or a RE that is yttrium and M that is antimony (page 3, line 20-36) (page 4, line 1-5). Regarding claim 9, Hoffman et al. discloses a RE that is neodymium and M that is chromium, a RE that is neodymium and M that is titanium, a RE that is samarium and M that is antimony, or a RE that is ytterbium and M that is titanium. Regarding claim 11, Hoffman et al. discloses the compound with an x value less than or equal to 0.95 and greater than or equal to 0.10 as seen in the table above. Regarding claim 12, Hoffman et al. discloses the compound with an x value less than or equal to 0.85 and greater than or equal to 0.10 as seen in the table above. Regarding claim 14, Hoffman et al. discloses a compound that has an x value that is less than or equal to 0.95 and greater than or equal to 0.0 as seen in the table above. The combinations of yttrium and titanium, holmium and antimony, and yttrium and antimony are disclosed in the patent (page 3, line 20-36) (page 4, line 1-5). Regarding claim 16, Hoffman et al. discloses the compound with an x value less than or equal to 0.80 and greater than or equal to 0.2 as seen in the table above. Regarding claim 18, Hoffman et al. discloses a compound that has an x value that is less than or equal to 0.9 and greater than or equal to 0.0 as seen in the table above. The combinations of neodymium and chromium, neodymium and titanium, samarium and antimony, and ytterbium and titanium are disclosed in the patent (page 3, line 20-36) (page 4, line 1-5). Regarding claims 4, 6, 8, 10, 15, and 19 Hoffman does not calculate an oxygen 2p-band center. However, the reference discloses a synthesized pyrochlore compound containing the same elements in the same amounts. Therefore, it is the position of the examiner that the oxygen 2p-band center would inherently be the same. When the examiner has reason to believe that the functional language asserted to be critical for establishing novelty in a claimed subject matter may in fact be an inherent characteristic of the prior art, the burden of proof is shifted to Applicants to prove that the subject matter shown in the prior art does not possess the characteristics relied upon. In re Fitzgerald et al. 205 USPQ 594. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to DAVID A CALDERON whose telephone number is (571)272-9866. The examiner can normally be reached Monday-Friday 8-5PM. 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, Christina Johnson can be reached at 5712721176. 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. /DAVID ANDREW CALDERON/Examiner, Art Unit 1742 /CHRISTINA A JOHNSON/Supervisory Patent Examiner, Art Unit 1742
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Prosecution Timeline

Jul 27, 2023
Application Filed
Feb 19, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12594547
PREPARATION METHOD OF METAL OXIDE LOADED NANO ZEOLITE PARTICLE CATALYST
2y 5m to grant Granted Apr 07, 2026
Study what changed to get past this examiner. Based on 1 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
Grant Probability
2y 8m
Median Time to Grant
Low
PTA Risk
Based on 0 resolved cases by this examiner. Grant probability derived from career allow rate.

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