Prosecution Insights
Last updated: April 19, 2026
Application No. 18/936,782

HALIDE-FREE AMMONIUM SILANES

Non-Final OA §103§112
Filed
Nov 04, 2024
Examiner
VALENROD, YEVGENY
Art Unit
1628
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Topikos Scientific Inc.
OA Round
1 (Non-Final)
73%
Grant Probability
Favorable
1-2
OA Rounds
2y 8m
To Grant
98%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allow Rate
727 granted / 1000 resolved
+12.7% vs TC avg
Strong +26% interview lift
Without
With
+25.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
40 currently pending
Career history
1040
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
36.8%
-3.2% vs TC avg
§102
18.0%
-22.0% vs TC avg
§112
21.5%
-18.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1000 resolved cases

Office Action

§103 §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 . Election/Restrictions Applicant’s election of Group I, claims 1-17, in the reply filed on 1/22/26 is acknowledged. Claims 18-20 have been canceled in the amendment filed on 1/22/26 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 1-17 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 directed to the first compound of formula B where R is OH or alkoxy, and the claim also recites the second compound where R is limited to OH 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 Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claim(s) 1-17 is/are rejected under 35 U.S.C. 103 as being unpatentable over Allred et al (WO 2021/077119). Scope of prior art On pages 398, 399 and 406 Allred teaches compounds 4, 5 and 13, respectively, which are conjugates of the currently claimed compounds H and B: Compound 4: PNG media_image1.png 242 716 media_image1.png Greyscale Compound 5: PNG media_image2.png 228 732 media_image2.png Greyscale Compound 13: PNG media_image3.png 236 708 media_image3.png Greyscale Compounds 4, 5 and 13 have a halogen counterion, however other non-halogen counterions are recited throughout the disclosure and in claim 2: PNG media_image4.png 110 800 media_image4.png Greyscale In claim 24 Allred teaches pharmaceutical composition for topical delivery. Ascertaining the difference The difference between rejected claims and disclosure of Allred is that the currently claimed compounds H and B are hydrolysis products of Allred’s compounds 4, 5 and 13. Also, while Allred teaches a chloride counterion, current claims exclude halogen anions. Obviousness A skilled artisan would have found it obvious to prepare a topical formulation comprising a non-halogen salt of compounds 4, 5 and 13 of Allred. At issue is whether the currently claimed compound H and B would be present in the topical formulation. Example 10 in the current specification indicates that the conjugate compound exists in equilibrium with the hydrolysis products, which are compound H and B of current claims. Compound of Allred therefore also exist in equilibrium with its hydrolysis products, compounds H and B. Therefore, the formulation of Allred inherently comprises the currently claimed compounds H and B at claimed ratios. Current claims are directed to non-halogen counterion. While Allred exemplifies chloride counterion, art also establishes equivalency between chloride and non-halogen counterions. It would therefore be obvious to substitute one of the non-halogen counterions for chloride with an expectation that the resulting product will have the same utility. Conclusion Claims 1-17 are pending Claims 1-17 are rejected Any inquiry concerning this communication or earlier communications from the examiner should be directed to YEVGENY VALENROD whose telephone number is (571)272-9049. The examiner can normally be reached Mon-Fri 9am-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, Amy L Clark can be reached at 571-272-1310. 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. /YEVGENY VALENROD/Primary Examiner, Art Unit 1628
Read full office action

Prosecution Timeline

Nov 04, 2024
Application Filed
Feb 18, 2026
Non-Final Rejection — §103, §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
73%
Grant Probability
98%
With Interview (+25.8%)
2y 8m
Median Time to Grant
Low
PTA Risk
Based on 1000 resolved cases by this examiner. Grant probability derived from career allow rate.

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