Prosecution Insights
Last updated: October 02, 2026
Application No. 18/861,283

FLUORINE-CONTAINING ETHER COMPOUND, LUBRICANT FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM

Non-Final OA §112
Filed
Oct 29, 2024
Priority
Feb 20, 2023 — JP 2023-024274 +1 more
Examiner
CHAU, LINDA N
Art Unit
1785
Tech Center
1700 — Chemical & Materials Engineering
Assignee
RESONAC Corporation
OA Round
3 (Non-Final)
45%
Grant Probability
Moderate
3-4
OA Rounds
1y 10m
Est. Remaining
61%
With Interview

Examiner Intelligence

Grants 45% of resolved cases
45%
Career Allowance Rate
260 granted / 583 resolved
-20.4% vs TC avg
Strong +16% interview lift
Without
With
+16.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
46 currently pending
Career history
627
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
56.7%
+16.7% vs TC avg
§102
17.5%
-22.5% vs TC avg
§112
18.9%
-21.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 583 resolved cases

Office Action

§112
DETAILED ACTION 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 8/17/26 has been entered. 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 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 1-10 and 13-18 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. A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 1 recites the broad recitation “R4 represents a divalent linking group having one or more polar groups” (emphasis added), and the claim also recites PNG media_image1.png 754 652 media_image1.png Greyscale which is the narrower statement of the range/limitation as it requires specific number of polar groups. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. In addition, claim 1 recites “n pieces” of R4’s… (emphasis added). The examiner is unclear what is meant by “pieces” as this refers to a plural form of n. However, claim 1 refers that n can be 1. Clarification is needed. Claim 6 recites “wherein all the polar groups in R2, R4, and R5 in Formula (1) are hydroxy groups”. It is not clear how it is possible for all of the polar groups of R2 and R4 and R5 can be hydroxy groups. This is because R2, R4, and R5 comprises an ether group, which is a divalent linking group having polar groups. It is unclear to an examiner how an ether group that must be present in R2, R4, and R5 can somehow be replace or substituted with a hydroxyl group as well. This is also applicable to claim 7. Claim 7 further recites a total number of hydroxy groups included in R2, R4, and R5 is 2-8. It is unclear how all of the polar groups of R2, R4, and R5 that are hydroxyl groups would be able to fall under the total hydroxy groups of 2-8. For one example, it is unclear how it is possible to have a minimum value of 2 hydroxyl groups. Clarification is needed. Allowable Subject Matter Claims 1-10 and 13-18 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. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to LINDA N CHAU whose telephone number is (571)270-5835. The examiner can normally be reached 9AM-5PM EST M-F. 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, Mark Ruthkosky can be reached at (571)272-1291. 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. Linda Chau /L.N.C/Examiner, Art Unit 1785 /Holly Rickman/Primary Examiner, Art Unit 1785
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Prosecution Timeline

Oct 29, 2024
Application Filed
Nov 28, 2025
Non-Final Rejection mailed — §112
Jan 28, 2026
Response Filed
Apr 17, 2026
Final Rejection mailed — §112
Jul 16, 2026
Response after Non-Final Action
Aug 17, 2026
Request for Continued Examination
Aug 19, 2026
Response after Non-Final Action
Aug 24, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

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Patent 12744151
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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
45%
Grant Probability
61%
With Interview (+16.0%)
3y 10m (~1y 10m remaining)
Median Time to Grant
High
PTA Risk
Based on 583 resolved cases by this examiner. Grant probability derived from career allowance rate.

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