Prosecution Insights
Last updated: October 25, 2026
Application No. 18/576,160

HYDROXYPHENYL-TERMINATED POLYSILOXANE, POLYSILOXANE-POLYCARBONATE COPOLYMER COMPRISING THE SAME AS REPEATED UNIT WITH EXCELLENT TRANSPARENCY AND IMPROVED FLAME RETARDANCY, AND METHOD FOR PREPARING THE COPOLYMER

Non-Final OA §102
Filed
Jan 03, 2024
Priority
Jul 05, 2021 — RE 10-2021-0088119 +1 more
Examiner
XU, JIANGTIAN
Art Unit
Tech Center
Assignee
SAMYANG Corporation
OA Round
1 (Non-Final)
65%
Grant Probability
Moderate
1-2
OA Rounds
6m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 65% of resolved cases
65%
Career Allowance Rate
233 granted / 359 resolved
+4.9% vs TC avg
Strong +36% interview lift
Without
With
+35.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
66 currently pending
Career history
418
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
56.7%
+16.7% vs TC avg
§102
14.3%
-25.7% vs TC avg
§112
24.0%
-16.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 359 resolved cases

Office Action

§102
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 without traverse of Group I (claims 1-3) and species i (claim 2) in the reply filed on 8/19/2026 is acknowledged. Group II-IV (claims 4-16) and species ii (claim 3) are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 8/19/2026. Claim Rejections - 35 USC § 102 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 the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1-2 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Minemura et al (US 20110086227 A1). Regarding claim 1, Minemura teaches a monovalent phenol containing a polysiloxane group represented by general formula (4) PNG media_image1.png 200 400 media_image1.png Greyscale wherein R1 represents an alkylene group having 1 to 20 carbon atoms. R2 to R6 represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms or an alkenyl group having 2 to 10 carbon atoms. R7 and R8 represent a group selected from the group consisting of hydrogen, fluorine, chlorine, bromine, iodine, an alkyl group having 1 to 10 carbon atoms (preferably having 1 to 4 carbon atoms), an aryl group having 6 to 12 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or an aralkyl group having 7 to 17 carbon atoms (preferably having 7 carbon atom). a is an integer from 1 to 1000 [0043, 0027-0029, 0031]. A specific example of formula (4) is PNG media_image2.png 200 400 media_image2.png Greyscale (“a” is 10 on average) [0159], which reads on the claimed chemical formula 1-1 wherein, from left to right of chemical formula 1-1, R1=C4H9, R2=CH3, a=10+1 on average, b=0, c=1, R2=CH3, R3=C3H6, R4=H, R1=CH3. Since “a” is 10 on average, a compound represented by Chemical Formula 24 with a=9 and/or even a=8 are expected to be present, which meets the claimed range of a=1-10. Regarding claim 2, the recited “wherein the hydroxylphenyl-terminated polysiloxane of chemical formula 1-1 is a reaction product of a polysiloxane of the following chemical formula 3-1 and a compound of the following chemical formula 4” is a product-by-process limitation. Product-by-process claims are not limited to the manipulations of the recited steps, only to the structure implied by the steps. If the product in a product-by-process claim is the same as or obvious from a product of the prior art, the claim is unpatentable even though the product was made by a different process. See MPEP 2113(1). The product obtained through this process is a polysiloxane represented by the claimed formula 1-1. Since the same product was disclosed by the prior art, claim 2 does not gain patentable weight. Nevertheless, Minemura teaches that the monovalent phenol containing a polysiloxane group represented by the above general formula (4) can be produced by addition reaction of monovalent phenol having an unsaturated group with polysiloxane having a Si-H group at one end [0044]. The monovalent phenol having an unsaturated group corresponds to the claimed Chemical formula 4; the polysiloxane having a Si-H group at one end corresponds to the claimed Chemical formula 3-1. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JIANGTIAN XU whose telephone number is (571)270-1621. The examiner can normally be reached Monday-Thursday. 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, Robert Jones can be reached on (571) 270-7733. 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. /JIANGTIAN XU/Primary Examiner, Art Unit 1762
Read full office action

Prosecution Timeline

Jan 03, 2024
Application Filed
Oct 05, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

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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
65%
Grant Probability
99%
With Interview (+35.5%)
3y 3m (~6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 359 resolved cases by this examiner. Grant probability derived from career allowance rate.

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