Prosecution Insights
Last updated: April 19, 2026
Application No. 18/459,859

REMOVER REAGENT FOR CURED SILICONE SEALANT AND METHOD USING SAME

Non-Final OA §103
Filed
Sep 01, 2023
Examiner
HARRIS, BRITTANY SHARON
Art Unit
1761
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Hangzhou Joinleader New Materials Co. Ltd.
OA Round
1 (Non-Final)
52%
Grant Probability
Moderate
1-2
OA Rounds
3y 0m
To Grant
86%
With Interview

Examiner Intelligence

Grants 52% of resolved cases
52%
Career Allow Rate
13 granted / 25 resolved
-13.0% vs TC avg
Strong +34% interview lift
Without
With
+33.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
52 currently pending
Career history
77
Total Applications
across all art units

Statute-Specific Performance

§103
63.6%
+23.6% vs TC avg
§102
10.4%
-29.6% vs TC avg
§112
22.6%
-17.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 25 resolved cases

Office Action

§103
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 with traverse of Invention I in the reply filed on February 2nd, 2026 is acknowledged. Claims 10-19 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to nonelected inventions, there being no allowable generic or linking claim. Election was made with traverse in the reply filed on February 2nd, 2026. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. 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. Claims 1-6 and claims 8-9 are rejected under 35 U.S.C. 103 as being unpatentable over Zhu (CN 105080373 A) and further in view of Ohara (EP 0268344 A1). With regard to claims 1-6 and claims 8-9, Zhu discloses a low-corrosive for removing the cured silicon rubber solvent comprising 10% to 50% of benzene sulfonic acid or dodecyl benzene sulfonic acid and 0% to 10% of paraffin (see Abstract). However, Zhu fails to disclose a silicone oil. Ohara discloses a spray luster-cleansing agent containing silicone-oil, an analogous art (see Abstract). Ohara further discloses 5-60wt% of silicone oil (see page 2 line 52-53). Ohara further discloses silicone oil as having the ability to luster surfaces and further discloses phenyl methyl silicone oil as a suitable silicone oil (see page 2 line 41-42). It would have been obvious to one of ordinary skill in the art, before the effective filing date, to utilize the silicone oil, particularly the phenyl methyl silicone oil, of Ohara in the composition of Zhu for the purpose of lustering the surface to be cleaned, as disclosed by Ohara. Allowable Subject Matter Claim 7 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to BRITTANY SHARON HARRIS whose telephone number is (571)270-1390. The examiner can normally be reached 7:30-5:00. 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, Angela Brown-Pettigrew can be reached at (571) 272-2817. 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. /GREGORY R DELCOTTO/Primary Examiner, Art Unit 1761 /B.S.H./Examiner, Art Unit 1761
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Prosecution Timeline

Sep 01, 2023
Application Filed
Mar 09, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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HAIR CLEANSING COMPOSITION
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Patent 12570926
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Patent 12509647
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2y 5m to grant Granted Dec 30, 2025
Patent 12492357
FOAMING PRODUCE WASHES AND METHODS OF DISPENSING AND USING THE SAME
2y 5m to grant Granted Dec 09, 2025
Patent 12486472
CONCENTRATED LIQUID ESTERQUAT COMPOSITIONS
2y 5m to grant Granted Dec 02, 2025
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
52%
Grant Probability
86%
With Interview (+33.8%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 25 resolved cases by this examiner. Grant probability derived from career allow rate.

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