Prosecution Insights
Last updated: April 19, 2026
Application No. 18/589,501

THIOL-ACRYLATE POLYMERS, METHODS OF SYNTHESIS THEREOF AND USE IN ADDITIVE MANUFACTURING TECHNOLOGIES

Non-Final OA §102
Filed
Feb 28, 2024
Examiner
MCCLENDON, SANZA L
Art Unit
1765
Tech Center
1700 — Chemical & Materials Engineering
Assignee
C/O Adaptive 3D Technologies LLC
OA Round
2 (Non-Final)
81%
Grant Probability
Favorable
2-3
OA Rounds
2y 11m
To Grant
91%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
978 granted / 1213 resolved
+15.6% vs TC avg
Moderate +10% lift
Without
With
+10.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
37 currently pending
Career history
1250
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
38.1%
-1.9% vs TC avg
§102
32.4%
-7.6% vs TC avg
§112
17.2%
-22.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1213 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 . Response to Amendment In response to the Amendment received on 09/29/2025 and 12/08/2025, the examiner has carefully considered the amendments. The examiner acknowledges the cancellation of claims 1-2, 6, 8, and 58-62. The claim rejection under 35 U.S.C. § 112, 2nd paragraph for claims 58-59 have been overcome by the amendment and has hereby been withdrawn for consideration. Response to Arguments Applicant's arguments filed 09/29/2025 and 12/08/2025 have been fully considered but they are not persuasive. Applicant has amended the claims to require the tertiary amine chain transfer agent includes at least one of an aliphatic amine, aromatic amine and/or reactive amine, and wherein the tertiary amine includes at least one of triethyl amine, N, N’-dimethylaniline and/or N, N’-dimethylacrylamide. However, the claims is not limited to the chain transfer agent being selected from the amended subject matter. The chain transfer agent may additionally be at least one of a thiol or secondary alcohol. It is deemed Nakatani sets forth a thiol chain transfer agent, as well as, all the other components required in claim 24; therefore, claim 24 will be rejected over Nakatani. Please see below. 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. Claim(s) 24 is/are rejected under 35 U.S.C. 102(a1) as being anticipated by Nakatani et al (8,921,446). Nakatani sets forth photocurable materials for sealing. Said sealing material comprises a resin composition comprising (A) an oligomer having a weight average molecular weight of 10,000 to 30,000 and having a (meth) acryloyl group in the molecule; (B) a (meth) acrylate monomer; (C) a polythiol compound and, optionally, (D) a carbodiimide-see abstract, wherein the ratio of the number of (meth) acryloyl group contained in both (A) and (B) to the number of mercapto groups contained in (C) is 100:5n to 100:25n, n being the number of mercapto groups per molecule of (C)—see abstract and col. 3, line 64 to col. 4, line 3. The polythiol compound is preferably a secondary thiol compound having two to six mercapto groups—see col. 4, lines 8-111. The composition can further comprise (E) a photoinitiator and/or (F) a viscosity modifying agent—see col. 4, lines 28-31. Nakatani explicitly teaches the polythiol compound is a compound having a secondary mercapto group, wherein said secondary thiol contributes to superior storage stability properties in the composition, as well as, excellent coating stability. In addition, Nakatani discloses when a secondary thiol is added the resultant composition has excellent hardness and flexibility stability. It is believed the steric hindrance of the secondary thiol provides a balance between the radical reaction in the thiol-ene addition reaction and the thermal addition reaction—see col. 13, lines 14-29. Nakatani sets forth an embodiment which is deemed to anticipate the instant invention. The coating composition of example 2 comprises 100 parts by weight of a urethane (meth) acrylate oligomer (UV-3000B); 60 parts of phenol acrylate (acrylic monomer, mw 148.46 g/mol); 8 parts of pentaerythritol tetrakis(3-merpactobutyrate) (secondary thiol); 8 parts viscosity modifier; 2 parts photoinitiator Irgacure 184, and 0.02 parts hydroquinone. Said composition comprises 4.7 wt. % of polythiol and has good storage stability. The compositions inherently stabilizes by balancing the addition reaction and thermal reaction by inhibiting radical reaction between the thiol group and ene groups since the steric hindrance in the secondary thiol limits substitution reactions between the thiol and ene group. Thus, claim 24 is deemed anticipated. Allowable Subject Matter Claims 57 and 63-71 are allowed. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SANZA L MCCLENDON whose telephone number is (571)272-1074. The examiner can normally be reached 8-5. 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 on 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. /SANZA L. McCLENDON/Primary Examiner, Art Unit 1765 SMc
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Prosecution Timeline

Feb 28, 2024
Application Filed
Mar 22, 2025
Non-Final Rejection — §102
Sep 29, 2025
Response after Non-Final Action
Dec 08, 2025
Response Filed
Mar 07, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600819
A COMPOSITION FOR FAST-CURED THERMOSETS CONTAINING AMINES, THIOLS AND UNSATURATED MOLECULES
2y 5m to grant Granted Apr 14, 2026
Patent 12600820
PHOTOCURABLE COMPOSITION WITH HIGH SILICON CONTENT
2y 5m to grant Granted Apr 14, 2026
Patent 12600817
DEVICES AND METHODS FOR ANALYZING BIOLOGICAL SAMPLES
2y 5m to grant Granted Apr 14, 2026
Patent 12590211
COMPOSITIONS AND METHODS OF MAKING A GREEN BODY OR A PRINTED ARTICLE USING THE SAME
2y 5m to grant Granted Mar 31, 2026
Patent 12583789
COMPOSITION FOR FORMING COATING LAYER OF OPTICAL FIBER AND CURED LAYER THEREOF, OPTICAL FIBER HAVING CURED LAYER, AND USE THEREOF
2y 5m to grant Granted Mar 24, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
81%
Grant Probability
91%
With Interview (+10.4%)
2y 11m
Median Time to Grant
Moderate
PTA Risk
Based on 1213 resolved cases by this examiner. Grant probability derived from career allow rate.

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