Prosecution Insights
Last updated: July 17, 2026
Application No. 18/684,217

PROCESS FOR MAKING CYANOETHYLTRIMETHOXYSILANE

Non-Final OA §112§DP
Filed
Feb 16, 2024
Priority
Dec 03, 2021 — provisional 63/285,546 +2 more
Examiner
BUTCHER, ROBERT T
Art Unit
Tech Center
Assignee
DuPont de Nemours Inc.
OA Round
1 (Non-Final)
71%
Grant Probability
Favorable
1-2
OA Rounds
1m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allowance Rate
683 granted / 960 resolved
+11.1% vs TC avg
Strong +18% interview lift
Without
With
+17.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
41 currently pending
Career history
1018
Total Applications
across all art units

Statute-Specific Performance

§103
91.0%
+51.0% vs TC avg
§102
5.1%
-34.9% vs TC avg
§112
2.5%
-37.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 960 resolved cases

Office Action

§112 §DP
DETAILED ACTION The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . This application is a national stage entry under 35 U.S.C. §371 of International Application No. PCT/US22/79675 filed 11/11/2022. Acknowledgment is made of provisional application No. 63/285,546, filed on Dec. 3, 2021. Claims 1-9, 13-16 are pending. 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. Claim 2 is 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 2 recites the broad recitation a molar ratio (B):(A) of at least 5:1, and the claim also recites alternatively 5:1 to 30:1, alternatively ≥ 5:1 to 30:1 and alternatively 15:1 to 30:1 which is the narrower statement of the range/limitation. 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. Claim 6 recites an iodine number ≥ 900 mg/g (min). Iodine number represents the mass of iodine in milligrams adsorbed by 1 gram of material and typically expressed as mg/g, however it would not be clear to one skilled in the art the scope and meaning of an iodine number ≥ 900 mg/g (min). Appropriate correction and/or clarification is required. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1, 3, 13 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 11, 13 of copending Application No. 18/845,459 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because: Regarding claims 1, 3, 13: While copending 459 further requires a method for reducing color of cyanoethyltrimethoxysilane, claims 11, 13 of copending 459 arrive at claims 1, 3, 13 of the present invention in an anticipatory type manner. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Claims 1-6, 12-15, 17-18 are provisionally rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-6, 12-15, 17-18 of copending Application No. 19/146,749 (reference application). Although the claims at issue are not identical, they are not patentably distinct from each other because: Regarding claims 1-9, 13-16: While copending 749 further requires a dimer, claims 1-6, 12-15, 17-18 of copending 749 arrive at claims 1-6, 12-15, 17-18 of the present invention in an anticipatory type manner. This is a provisional nonstatutory double patenting rejection because the patentably indistinct claims have not in fact been patented. Allowable Subject Matter The present claims are allowable over the closest prior art Guancheng et al. CN 111100162, for the following reasons: Guancheng is directed to a method of making cyanotrialkoxysilane including cyanoethyltrimethoxysilane, comprising reacting 2-cyanoethyltrichlorosilane and ethanol/methanol. In contrast, the present invention utilizes starting materials of cyanoethyltriethoxysilane, methanol, and an acid catalyst to thereby produce a transesterification reaction. While the process of Guancheng comprises methanol, the starting materials do not comprise cyanoethyltriethoxysilane. Further, it would not be obvious to substitute 2-cyanoethyltrichlorosilane with cyanoethyltriethoxysilane since doing so would change the basic principle of operation of Guancheng. MPEP 2143.01 (VI). Therefore, Guancheng does not suggest alone, or in combination, the claimed process for preparing cyanoethyltriethoxysilane. The Examiner is unaware of prior art that reasonably suggests alone, or in combination, the claimed invention. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled "Comments on Statement of Reasons for Allowance." Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to ROBERT T BUTCHER whose telephone number is (571)270-3514. The examiner can normally be reached Telework M-F 9-5 Pacific Time Zone. 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, Lanee Reuther can be reached at (571) 270-7026. 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. /ROBERT T BUTCHER/Primary Examiner, Art Unit 1764
Read full office action

Prosecution Timeline

Feb 16, 2024
Application Filed
Jun 23, 2026
Non-Final Rejection mailed — §112, §DP (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
71%
Grant Probability
89%
With Interview (+17.5%)
2y 7m (~1m remaining)
Median Time to Grant
Low
PTA Risk
Based on 960 resolved cases by this examiner. Grant probability derived from career allowance rate.

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