Prosecution Insights
Last updated: July 17, 2026
Application No. 18/573,352

SILICONE COMPOSITIONS AND THEIR PREPARATION

Non-Final OA §112
Filed
Dec 21, 2023
Priority
Jun 28, 2021 — nonprovisional of PCTCN2021102634
Examiner
SERGENT, RABON A
Art Unit
Tech Center
Assignee
DuPont de Nemours Inc.
OA Round
1 (Non-Final)
55%
Grant Probability
Moderate
1-2
OA Rounds
1y 0m
Est. Remaining
79%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allowance Rate
543 granted / 991 resolved
-5.2% vs TC avg
Strong +24% interview lift
Without
With
+24.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
40 currently pending
Career history
1032
Total Applications
across all art units

Statute-Specific Performance

§103
68.4%
+28.4% vs TC avg
§102
8.8%
-31.2% vs TC avg
§112
18.7%
-21.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 991 resolved cases

Office Action

§112
Notice of Pre-AIA or AIA Status 1. The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Objection 2. Objection is made to claims 1 -15, because within the definition of R2,within claims 1 and 11, the significance of using semi-colons to separate some groups, as opposed to the use of commas to separate other groups, is unclear. Indefiniteness Rejection 3. 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. 4. Claims 3, 4, and 9 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. Firstly, with respect to claim 3, within line 4, it is unclear how to interpret the use of “and/or” within the grouping of chain extenders; it is unclear if the language pertains to the two species immediately before and after the language of if it pertains to all species after the language. Secondly, with respect to claim 4, it is unclear what amount constitutes “minimum residual” in connection with diacetamidosilane chain extender; the examiner has reviewed the specification and finds no guidance to address this issue. Furthermore, the use of “can” within the last line renders the claim indefinite, because the language denoted by “can” fails to constitute a definitive limitation. Thirdly, regarding claim 9, the phrase "such as" (line 6) renders the claim indefinite because it is unclear whether the limitations following the phrase are part of the claimed invention. See MPEP § 2173.05(d). Fourthly, with respect claim 9, applicants have referred to cure catalyst (d); however, within claim 1, (d) is specified as a moisture scavenger. Fifthly, with respect to claim 9, the use of the language, “if required”, after adhesion promoter renders the claim indefinite, because it is interpreted as not mandating the presence of the adhesion promoter; however, claim 1 mandates its presence. Sixthly, with respect to claim 9, the language, “the other optional additional ingredients”, lacks antecedence; it is unclear what constitutes these ingredients. Allowable Subject Matter 5. Claims 1, 2, 5-8, and 10-15 would be allowable once the objection to claims 1 and 11 are addressed. 6. Claims 3, 4, and 9 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. 7. The prior art of record fails to disclose the claimed one-component translucent RTV silicone composition, wherein the claimed chain extended alkoxy end-capped polydiorganosiloxane (a) is produced according to the reaction sequence set forth within claims 1 and 11. Conclusion 8. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Rabon A Sergent whose telephone number is (571)272-1079. The examiner can normally be reached on Monday through Friday from 9:00 AM until 5:00 PM, ET. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Heidi Riviere Kelley, can be reached at telephone number 571-270-1831. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from Patent Center. Status information for published applications may be obtained from Patent Center. Status information for unpublished applications is available through Patent Center to authorized users only. Should you have questions about access to the USPTO patent electronic filing system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). Examiner interviews are available via a variety of formats. See MPEP § 713.01. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) Form at https://www.uspto.gov/InterviewPractice. /RABON A SERGENT/Primary Examiner, Art Unit 1765
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Prosecution Timeline

Dec 21, 2023
Application Filed
Jun 30, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12679923
XYLYLENE DIISOCYNATE COMPOSITION, PREPARATION METHOD THEREFOR AND USE THEREOF
2y 10m to grant Granted Jul 14, 2026
Patent 12668661
PROCESS FOR PREPARING POLYPROPYLENE CARBONATE
4y 7m to grant Granted Jun 30, 2026
Patent 12662568
STABILE SILANE MODIFIED POLYMER COMPOSITION AND METHOD
6y 2m to grant Granted Jun 23, 2026
Patent 12655246
XYLYLENE DIISOCYANATE COMPOSITION, XYLYLENE DIISOCYANATE MODIFIED COMPOSITION, POLYMERIZABLE COMPOSITION, RESIN, MOLDED ARTICLE, OPTICAL ELEMENT, AND LENS
4y 0m to grant Granted Jun 16, 2026
Patent 12649818
XYLYLENE DIISOCYANATE COMPOSITION AND OPTICAL COMPOSITION COMPRISING SAME
3y 0m 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

1-2
Expected OA Rounds
55%
Grant Probability
79%
With Interview (+24.2%)
3y 7m (~1y 0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 991 resolved cases by this examiner. Grant probability derived from career allowance rate.

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