Prosecution Insights
Last updated: July 17, 2026
Application No. 18/826,828

LUBRICATING OIL COMPOSITIONS WITH IMPROVED WEAR PERFORMANCE AND ENGINE CLEANLINESS

Final Rejection §112
Filed
Sep 06, 2024
Priority
Sep 22, 2023 — provisional 63/584,682
Examiner
OLADAPO, TAIWO
Art Unit
1771
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Infineum International Limited
OA Round
2 (Final)
53%
Grant Probability
Moderate
3-4
OA Rounds
1y 3m
Est. Remaining
65%
With Interview

Examiner Intelligence

Grants 53% of resolved cases
53%
Career Allowance Rate
612 granted / 1157 resolved
-12.1% vs TC avg
Moderate +12% lift
Without
With
+11.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
58 currently pending
Career history
1242
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
74.3%
+34.3% vs TC avg
§102
5.2%
-34.8% vs TC avg
§112
3.5%
-36.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1157 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 . The amendment dated 01/08/2026 has been considered and entered. The amendment overcomes the rejections in view of Pirouz et al. (US 2018/0171258) for failing to teach homopolyisoprene having the functionality distribution of the claim. Therefore, the previous rejections are withdrawn and new grounds of rejections are made as necessitated by the amendment. 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 1 – 15, 18 – 46, 49 – 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. The claims recite a functionality distribution Fd) value of 3.5 or less, but also recites average functionality (Fv) of 5 to 20 which is ambiguous, because paragraph [0055] of applicant’s specification as originally filed teaches that the average functionality value (Fv) is the same as the functionality distribution Fd). Response to Arguments Applicant’s arguments have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. 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 TAIWO OLADAPO whose telephone number is (571)270-3723. The examiner can normally be reached 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, Prem Singh can be reached at 571-272-6381. 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. /TAIWO OLADAPO/Primary Examiner, Art Unit 1771
Read full office action

Prosecution Timeline

Sep 06, 2024
Application Filed
Sep 26, 2025
Non-Final Rejection mailed — §112
Jan 08, 2026
Response Filed
Apr 30, 2026
Final Rejection mailed — §112
Jun 09, 2026
Applicant Interview (Telephonic)
Jun 09, 2026
Examiner Interview Summary

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12680039
BIOFUEL AND METHOD OF SYNTHESIS OF THE SAME
2y 1m to grant Granted Jul 14, 2026
Patent 12674111
Lubricants Having Improved Low Temperature, Oxidation, And Deposit Control Performance
3y 7m to grant Granted Jul 07, 2026
Patent 12674114
LUBRICANT COMPOSITIONS INCLUDING A POLYMERIZABLE-ACID GRAFT POLYMER AS A CORROSION INHIBITOR
1y 6m to grant Granted Jul 07, 2026
Patent 12649889
LUBRICATING OIL ADDITIVE COMPOSITION AND LUBRICATING OIL COMPOSITION
1y 5m to grant Granted Jun 09, 2026
Patent 12649891
GREASE COMPOSITION
1y 5m to grant Granted Jun 09, 2026
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
53%
Grant Probability
65%
With Interview (+11.7%)
3y 1m (~1y 3m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1157 resolved cases by this examiner. Grant probability derived from career allowance rate.

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