Prosecution Insights
Last updated: August 14, 2026
Application No. 18/259,972

PROCESS FOR REMOVAL OF THIO-BASED END GROUPS FROM RAFT POLYMERS DERIVED FROM MONOMERS COMPRISING LACTAM AND ACRYLOYL MOIETIES

Final Rejection §102§103
Filed
Jun 29, 2023
Priority
Jan 06, 2021 — provisional 63/134,350 +2 more
Examiner
BOYLE, ROBERT C
Art Unit
1764
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Isp Investments LLC
OA Round
2 (Final)
70%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
67%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
785 granted / 1130 resolved
+4.5% vs TC avg
Minimal -3% lift
Without
With
+-2.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
39 currently pending
Career history
1155
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
43.4%
+3.4% vs TC avg
§102
19.4%
-20.6% vs TC avg
§112
25.9%
-14.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1130 resolved cases

Office Action

§102 §103
DETAILED ACTION Response to Amendment No new grounds of rejection have been introduced, therefore this action is properly deemed FINAL. The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Information Disclosure Statement The information disclosure statement filed 5/13/2026 fails to comply with 37 CFR 1.98(a)(2), which requires a legible copy of each cited foreign patent document; each non-patent literature publication or that portion which caused it to be listed; and all other information or that portion which caused it to be listed. It has been placed in the application file, but the information referred to therein has not been considered. While there is a translation of CN 101775102 present, there is no copy of the foreign patent document. Priority Applicant’s claim for the benefit of a prior-filed application under 35 U.S.C. 119(e) or under 35 U.S.C. 120, 121, 365(c), or 386(c) is acknowledged. Applicant has not complied with one or more conditions for receiving the benefit of an earlier filing date under 35 U.S.C. 119(e) as follows: This application makes reference to or appears to claim subject matter disclosed in Application No. 63/134,350, filed 1/6/2021. If applicant desires to claim the benefit of a prior-filed application under 35 U.S.C. 119(e), 120, 121, 365(c) or 386(c), the instant application must contain, or be amended to contain, a specific reference to the prior-filed application in compliance with 37 CFR 1.78. If the application was filed before September 16, 2012, the specific reference must be included in the first sentence(s) of the specification following the title or in an application data sheet (ADS) in compliance with pre-AIA 37 CFR 1.76; if the application was filed on or after September 16, 2012, the specific reference must be included in an ADS in compliance with 37 CFR 1.76. For benefit claims under 35 U.S.C. 120, 121, 365(c), or 386(c), the reference must include the relationship (i.e., continuation, divisional, or continuation-in-part) of the applications. If the instant application is a utility or plant application filed under 35 U.S.C. 111(a), the specific reference must be submitted during the pendency of the application and within the later of four months from the actual filing date of the application or sixteen months from the filing date of the prior application. If the application is a national stage application under 35 U.S.C. 371, the specific reference must be submitted during the pendency of the application and within the later of four months from the date on which the national stage commenced under 35 U.S.C. 371(b) or (f), four months from the date of the initial submission under 35 U.S.C. 371 to enter the national stage, or sixteen months from the filing date of the prior application. See 37 CFR 1.78(a)(4) for benefit claims under 35 U.S.C. 119(e) and 37 CFR 1.78(d)(3) for benefit claims under 35 U.S.C. 120, 121, 365(c), or 386(c). This time period is not extendable and a failure to submit the reference required by 35 U.S.C. 119(e) and/or 120, where applicable, within this time period is considered a waiver of any benefit of such prior application(s) under 35 U.S.C. 119(e), 120, 121, 365(c), and 386(c). A benefit claim filed after the required time period may be accepted if it is accompanied by a grantable petition to accept an unintentionally delayed benefit claim under 35 U.S.C. 119(e) (see 37 CFR 1.78(c)) or under 35 U.S.C. 120, 121, 365(c), or 386(c) (see 37 CFR 1.78(e)). The petition must be accompanied by (1) the reference required by 35 U.S.C. 120 or 119(e) and by 37 CFR 1.78 to the prior application (unless previously submitted), (2) the applicable petition fee under 37 CFR 1.17(m)(1) or (2), and (3) a statement that the entire delay between the date the benefit claim was due under 37 CFR 1.78 and the date the claim was filed was unintentional. The presentation of a benefit claim may result in an additional fee under 37 CFR 1.17(w)(1) or (2) being required, if the earliest filing date for which benefit is claimed under 35 U.S.C. 120, 121, 365(c), or 386(c) and 1.78(d) in the application is more than six years before the actual filing date of the application. The Director may require additional information where there is a question whether the delay was unintentional. The petition should be addressed to: Mail Stop Petition, Commissioner for Patents, P.O. Box 1450, Alexandria, Virginia 22313-1450. If the reference to the prior application was previously submitted within the time period set forth in 37 CFR 1.78 but was not included in the location in the application required by the rule (e.g., if the reference was submitted in an oath or declaration or the application transmittal letter), and the information concerning the benefit claim was recognized by the Office as shown by its inclusion on the first filing receipt, the petition under 37 CFR 1.78 and the petition fee under 37 CFR 1.17(m)(1) or (2) are not required. Applicant is still required to submit the reference in compliance with 37 CFR 1.78 by filing an ADS in compliance with 37 CFR 1.76 with the reference (or, if the application was filed before September 16, 2012, by filing either an amendment to the first sentence(s) of the specification or an ADS in compliance with pre-AIA 37 CFR 1.76). See MPEP § 211.02. Applicant has indicated on pg. 13 of the Remarks filed on 5/13/206 that the instant application claims priority to US 63/134,350 filed on 1/6/2021. However, 37 CFR 1.78(a)(3) requires that any claim to priority be recited in the ADS. As the provisional document is not present on the ADS, proper priority to the provisional is not present. It is suggested that Applicant file a petition with a statement of unintentional delay in accordance with 37 CFR 1.78(c) to ensure the instant application properly claims priority to the provisional. Additionally, Applicant invokes the 102(b)(1)(A) exclusion. In accordance with MPEP 717, because there are more authors on the Gibson, Polymer Chemistry, 2020, 11, 1785-1796 than there are inventors in the instant application, the proper way to invoke the exclusion is by use of a Declaration. See MPEP 717. In other words, it is suggested that to apply the 102(1)(b)(A) exclusion, Applicant correct the priority to include the provisional and submit a Declaration. In view of this, the anticipation rejection over Gibson is maintained. Claim Rejections - 35 USC § 102 Claim(s) 1-8, 10-15 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Gibson, Polymer Chemistry, 2020, 11, 1785-1796. The rejection is adequately set forth in the office action mailed on 2/13/2026 and is incorporated here by reference. Claim Rejections - 35 USC § 103 Claim(s) 1-15 is/are rejected under 35 U.S.C. 103 as being unpatentable over Cunningham, Macromolecules, 2016, 49, 4520-4533 in view of Gibson, Polymer Chemistry, 2020, 11, 1785-1796. The rejection is adequately set forth in the office action mailed on 2/13/2026 and is incorporated here by reference. Response to Arguments Applicant's arguments filed 5/13/2026 have been fully considered but they are not persuasive. As noted above, the 102(1)(b)(A) exclusion is not applied and the anticipation rejection is maintained. Regarding Cunningham, Applicant argues that Gibson is relied on for using radiation for removal of the thio based end group and Gibson no longer is prior art due to the exclusion discussed above. However, as Gibson remains prior art (for now), the rejection 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 ROBERT C BOYLE whose telephone number is (571)270-7347. The examiner can normally be reached Monday-Thursday, 10am-4pm. 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, Arrie (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 C BOYLE/Primary Examiner, Art Unit 1764
Read full office action

Prosecution Timeline

Jun 29, 2023
Application Filed
Feb 13, 2026
Non-Final Rejection mailed — §102, §103
May 13, 2026
Response Filed
Jun 11, 2026
Examiner Interview (Telephonic)
Jun 17, 2026
Final Rejection mailed — §102, §103 (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

3-4
Expected OA Rounds
70%
Grant Probability
67%
With Interview (-2.7%)
2y 8m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1130 resolved cases by this examiner. Grant probability derived from career allowance rate.

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