Prosecution Insights
Last updated: October 04, 2026
Application No. 18/257,695

CHEMICAL ADDITIVES AND THEIR USE THEREOF FOR MODIFYING MECHANICAL PROPERTIES OF PVC AND PREVENTING THE FORMATION OF SURFACE DEFECTS DURING PVC CALENDERING

Final Rejection §102
Filed
Jun 15, 2023
Priority
Dec 17, 2020 — provisional 63/126,937 +2 more
Examiner
DU, SURBHI M
Art Unit
1765
Tech Center
1700 — Chemical & Materials Engineering
Assignee
The Royal Institution For The Advancement Of Learning / Mcgill University
OA Round
2 (Final)
67%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 67% — above average
67%
Career Allowance Rate
81 granted / 121 resolved
+1.9% vs TC avg
Strong +29% interview lift
Without
With
+29.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
43 currently pending
Career history
162
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
58.9%
+18.9% vs TC avg
§102
16.5%
-23.5% vs TC avg
§112
17.8%
-22.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 121 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 . Claim Rejections - 35 USC § 102 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. Claims 1-3 and 9-11 are rejected under 35 U.S.C. 102 (a)(1) as being anticipated by Kugele et al. US 4,711,920. Regarding claims 1-3 and 9-11, Kugele discloses diester compound (col 6, line 42) with formula as shown below. PNG media_image1.png 51 193 media_image1.png Greyscale The compound as shown above, reads on the structural limitations of the required formula, where Ra, Rb, Rc, and Rd are H, Re is ethyl, m=1, n=0, R1 is C2 alkenylene, R2 is C4 alkyl, and where the overall residue has a molecular formula C30H44O12 which has an average Mn of 597 g/mol. which meets the requirement of the following compound, PNG media_image2.png 190 391 media_image2.png Greyscale in which Y corresponds to the required as shown below: PNG media_image3.png 117 439 media_image3.png Greyscale Therefore, the invention as claimed is fully anticipated by Kugele as disclosing each limitation of the rejected claims as per discussion above. Response to Arguments Applicant’s arguments filed on 06/30/2026 with respect to claim(s) 1-11 which were rejected under 35 U.S.C. 102(a) (1) as anticipated by Turner, have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Applicant submits that the claimed structure and its specific Mn is a distinguishing feature and is associated with unexpected technical effects. As discussed above Kugele anticipates the required structure and its Mn and therefore the required structure is not novel. Since a chemical composition and its properties are inseparable, therefore, if the prior art teaches the identical chemical structure, the properties applicant discloses and/or claims are necessarily present, See MPEP 2112.01 I. and II. In the instant case the prior art compound would behave in a similar manner to remove surface defects or reduce leaching as observed by the instant specification. Applicant’s amended structure does not recite a distinguishing feature over the compound provided by Kugele and therefore the rejection of the amended claims is maintained. Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Surbhi M Du whose telephone number is (571)272-9960. The examiner can normally be reached M-F 9:00 am to 5:00pm. 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, Heidi (Riviere) Kelley can be reached at 571-270-1831. 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. /S.M.D./ Examiner Art Unit 1765 /JOHN M COONEY/Primary Examiner, Art Unit 1765
Read full office action

Prosecution Timeline

Jun 15, 2023
Application Filed
Apr 08, 2026
Non-Final Rejection mailed — §102
Jun 30, 2026
Response Filed
Aug 18, 2026
Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12729265
POLYURETHANES FROM DEPOLYMERIZED LIGNIN CONTAINING LIGNIN MONOMERS
3y 11m to grant Granted Sep 08, 2026
Patent 12714094
CRYOPROTECTANT POLYMERS AND METHODS OF MAKING AND USING THEREOF
4y 7m to grant Granted Aug 25, 2026
Patent 12679961
FILLED AUTOMOTIVE POLYPROPYLENE COMPOSITION CONTAINING RECYCLATES
3y 5m to grant Granted Jul 14, 2026
Patent 12674033
POLYCARBONATE-POLYORGANOSILOXANE COPOLYMER
4y 0m to grant Granted Jul 07, 2026
Patent 12674055
PHLOROGLUCINOLIC RESINS, METHODS OF MAKING, AND USES IN RUBBER COMPOSITIONS
4y 0m to grant Granted Jul 07, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
67%
Grant Probability
96%
With Interview (+29.1%)
3y 2m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 121 resolved cases by this examiner. Grant probability derived from career allowance rate.

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