Prosecution Insights
Last updated: August 16, 2026
Application No. 18/561,024

ANTI-STATIC SILICONE RELEASE COATINGS AND METHODS FOR THEIR PREPARATION AND USE

Non-Final OA §112
Filed
Nov 15, 2023
Priority
Aug 31, 2021 — nonprovisional of PCTCN2021115592
Examiner
ZHANG, RUIYUN
Art Unit
Tech Center
Assignee
DuPont de Nemours Inc.
OA Round
1 (Non-Final)
70%
Grant Probability
Favorable
1-2
OA Rounds
1m
Est. Remaining
81%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
766 granted / 1089 resolved
+10.3% vs TC avg
Moderate +10% lift
Without
With
+10.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
65 currently pending
Career history
1152
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
50.5%
+10.5% vs TC avg
§102
21.6%
-18.4% vs TC avg
§112
20.8%
-19.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1089 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 . DETAILED ACTION Claim Objections Claim 2, “where each R1 is an independently selected monovalent hydrocarbon group free of aliphatic unsaturation, each R2 is an independently selected aliphatically unsaturated monovalent hydrocarbon group” is suggested to be changed to “wherein each R1 is an independently selected monovalent saturated aliphatic hydrocarbon group, each R2 is an independently selected monovalent unsaturated aliphatic hydrocarbon group”. Appropriate correction is required. Claim 2, “monofunctional units” and “difunctional units” should read “monovalent units” and “divalent units” because a, b and c are not associated with functional groups. This objection is applicable to all the occurrences in the present claims. Appropriate correction is required. Claim 2, “subscripts a and b” should read “a and b”. This objection is applicable to all the occurrences in the present claims. Appropriate correction is required. Claim 2, “sufficient to impart a viscosity …” should read “sufficient to impart a viscosity of the branched polyorganosiloxane polymer…”. Appropriate correction is required. Claim 2, “aliphatically unsaturated group” should read “unsaturated aliphatic group”. This objection is applicable to all the occurrences in the present claims. Appropriate correction is required. Claim 2, “based on weight of silicone the release coating dispersion” should read “based on weight of the silicone release coating dispersion”. Appropriate correction is required. Claim 9, “R4 is selected from the group consisting of H and an alkyl group” should be re-written to follow a chemical formula containing this group. Appropriate correction is required. Claim 11 and 18, “where (A) the ionic liquid comprises 90 weight %, based on combined weights of (A1) and (A2), of (A1) lithium trifluoromethylsulfonate, and10 weight %, based on combined weights of (A1) and (A2), of (A2) lithium bis(trifluoro methylsulfonyl)imide; thereby forming an aqueous solution, …” is suggested to be changed to “where (A) the ionic liquid comprises 90 weight% of (A1) lithium trifluoro methylsulfonate and 10 weight% of (A2) lithium bis(trifluoromethylsulfonyl)imide, based on total weight of (A1) and (A2), thereby form an aqueous solution; and…”. Claim 13 is objected to under 37 CFR 1.75(c) as being in improper form because a multiple dependent claim should refer to other claims in the alternative only. See MPEP § 608.01(n). Accordingly, the claim 13 has not been further treated on the merits. 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 2-7, 12, 15 -19 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 pre-AIA the applicant regards as the invention. Claim 2 is rejected as being vague and indefinite when the claim recites “provide a molar ratio of silicon bonded hydrogen atoms to aliphatically unsaturated groups (SiH:Vi ratio) in the release coating composition of >1:1 to 5:1”, because the molar ratio range “of >1:1 to 5:1” is not clear. In this office action, it is taken that the molar ration is in range of 1:1 to 5:1. Claims 3-4, 7, 12, 15-19 are also rejected for depending from claim 2, thus inclusion of its indefinite features. Claims 3 and 15 rejected as being vague and indefinite when these claims recite “where the continuous phase further comprises up to 90 weight % of a solvent, with a balance to 100 weight % of the continuous phase being the silicone release coating composition”, because the recitations cause confusion. In this office, it is taken that “the continuous phase comprising the silicone release coating composition”. Claim 16 is also rejected for depending from claim 15, thus inclusion of its indefinite features. Allowable Subject Matter Claims 1 and 8 are allowable and claims 2-7 and 9-19 would be allowable if rewritten to overcome objections and 112 rejections as set forth above. The reason for the allowance is that the claims are allowable over closest prior art Onozawa et al (US 2020/0048508, of record, IDS 11/15/23) and Christiano et al (US 6,656,975). Onozawa discloses a silicone composition for release paper or release film ([0018] comprising a linear or a branched polyorganosiloxane polymer having at least two alkenyl groups ([0022], [0034]-[0041]) satisfying chemical formula of branched polyorganosiloxane (C) and polydiorganosiloxanes (E) as in the present claim 2; a polyorganohydrogen -siloxane having at least three silicon bonded hydrogen atoms per molecule ([0023], [0042]-[0048]), with a molar ratio of silicon bonded hydrogen atoms to unsaturated groups satisfying presently claimed range ([0049]); a hydrosilylation reaction catalyst of 5 to 2000 ppm of a platinum group metal based on weight of total silicone resins; an organic solvent ([0052]); and an ionic compound including an ionic liquid as an antistatic agent ([0054]-[0063]). ‘508 also discloses a method of preparing the silicone composition and related release liner ([0102]-[0109]). Christian discloses a silicone dispersion comprising a continuous phase being a polar organic solvent with dispersed silicone material (discontinuous phase) being linear or branched polyorganosiloxane encapsulated with in an organic encapsulating material (C2/L1-L18, C2/L45-C3/25). However, the prior art of record does not disclose or fairly suggest a silicone release coating dispersion as recited in the present claim 1, which comprises a continuous phase comprising a hydrosilylation reaction curable silicone and an aqueous discontinuous phase dispersed in the continuous phase; wherein the aqueous discontinuous phase comprises an ionic liquid dissolved in water. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to RUIYUN ZHANG whose telephone number is (571)270-7934. The examiner can normally be reached on 8:00-5:00 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, Arron Austin can be reached on 571-272-8935. 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 the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /RUIYUN ZHANG/Primary Examiner, Art Unit 1782
Read full office action

Prosecution Timeline

Nov 15, 2023
Application Filed
Jun 26, 2025
Response after Non-Final Action
Jul 16, 2026
Non-Final Rejection mailed — §112 (current)

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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
70%
Grant Probability
81%
With Interview (+10.4%)
2y 10m (~1m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1089 resolved cases by this examiner. Grant probability derived from career allowance rate.

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