Prosecution Insights
Last updated: July 17, 2026
Application No. 18/526,073

POLYTHIOL COMPOSITION, POLYMERIZABLE COMPOSITION, RESIN, MOLDED ARTICLE, OPTICAL MATERIAL, AND LENS

Non-Final OA §102§103§112
Filed
Dec 01, 2023
Priority
Dec 25, 2020 — JP 2020-216939 +3 more
Examiner
SERGENT, RABON A
Art Unit
Tech Center
Assignee
Mitsui Chemicals Inc.
OA Round
1 (Non-Final)
55%
Grant Probability
Moderate
1-2
OA Rounds
11m
Est. Remaining
79%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allowance Rate
543 granted / 991 resolved
-5.2% vs TC avg
Strong +24% interview lift
Without
With
+24.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
40 currently pending
Career history
1032
Total Applications
across all art units

Statute-Specific Performance

§103
68.4%
+28.4% vs TC avg
§102
8.8%
-31.2% vs TC avg
§112
18.7%
-21.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 991 resolved cases

Office Action

§102 §103 §112
Detailed Office Action Notice of Pre-AIA or AIA Status 1. The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Objection to Abstract 2. The abstract of the disclosure is objected to because the subject matter of the abstract is not representative of the claimed invention. The abstract is devois of the claimed limitations with respect to the isocyanate compounds of claim 1. A corrected abstract of the disclosure is required and must be presented on a separate sheet, apart from any other text. See MPEP § 608.01(b). Claim Rejections - 35 USC § 112 3. The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. 4. Claims 1 and 5-11 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Polythiol compound (A) and the compound represented by formula (1), as claimed, are not mutually exclusive. Since the respectively claimed compounds can be satisfied by the same compound, the metes and bounds of the claims cannot be determined. Prior Art Rejections 5. 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. 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. 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. 6. Claims 1-4 and 6-11 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Pai et al. (US 2021/0171449 A1). Pai et al. disclose an optical polymerizable composition for the production of molded articles including optical lenses (See paragraphs [0212]-[0217]), wherein the composition comprises 2-(2-mercaptoethylthio)propane-1,3-dithiol, meeting applicants’ compounds of formulas (1) (claim 1) and (1a) (claim 7), as a preferred thiol reactant, which may be combined with other thiols, such as those of claims 2-4 (See paragraphs [0205], [0204], and [0206]) and xylylene diisocyanate and cyanobenzyl isocyanate, corresponding to applicants’compound (N3) (See paragraphs [0171] and 0170], respectively). The cyanobenzyl isocyanate may be present in an amount of 1% by weight or less, which equates to 10,000 PPM or less. Accordingly, the quantity clamed for compound (N3) is considered met. Regarding claim 6, since 2-(2-mercaptoethylthio)propane-1,3-dithiol is disclosed as being preferred and therefore present, the limitation of claim 6 is met. 7. Claim 5 is rejected under 35 U.S.C. 103 as being unpatentable over Pai et al. (US 2021/0171449 A1). Pai et al. disclose an optical polymerizable composition for the production of molded articles including optical lenses (See paragraphs [0212]-[0217]), wherein the composition comprises 2-(2-mercaptoethylthio)propane-1,3-dithiol, meeting applicants’ compounds of formulas (1) (claim 1) and (1a) (claim 7), as a preferred thiol reactant, which may be combined with other thiols, such as those of claims 2-4 (See paragraphs [0205], [0204], and [0206]) and xylylene diisocyanate and cyanobenzyl isocyanate, corresponding to applicants’compound (N3) (See paragraphs [0171] and 0170], respectively). The cyanobenzyl isocyanate may be present in an amount of 1% by weight or less, which equates to 10,000 PPM or less. Accordingly, the quantity clamed for compound (N3) is considered met. 8. Though the reference fails to disclose the claimed peak area for the compound of formula (1), the position is taken, as aforementioned, that the cited disclosures within the reference allow for the use of mixtures of thiol compound of formula (1) and other thiol compounds. Accordingly, the position is taken that optimizing the quantity ratio of the thiols used, to tailor such properties as impact resistance or crosslink density, and thereby optimizing the peak area value, would have been obvious to one of ordinary skill in the art. Comment Regarding Effective Filing Date 9. Since parent US application 18/245554, PCT/JP2021/048029, and JP2020-216939 do not disclose compounds (N1), (N2), or (N3) or the limitations associated therewith, the claims are not entitled to the benefit of their filing dates. Conclusion 10. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Rabon A Sergent whose telephone number is (571)272-1079. The examiner can normally be reached on Monday through Friday from 9:00 AM until 5:00 PM, ET. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Heidi Riviere Kelley, can be reached at telephone number (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 an application may be obtained from Patent Center. Status information for published applications may be obtained from Patent Center. Status information for unpublished applications is available through Patent Center to authorized users only. Should you have questions about access to the USPTO patent electronic filing system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). Examiner interviews are available via a variety of formats. See MPEP § 713.01. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) Form at https://www.uspto.gov/InterviewPractice. /RABON A SERGENT/Primary Examiner, Art Unit 1765
Read full office action

Prosecution Timeline

Dec 01, 2023
Application Filed
Jun 17, 2026
Non-Final Rejection mailed — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12679923
XYLYLENE DIISOCYNATE COMPOSITION, PREPARATION METHOD THEREFOR AND USE THEREOF
2y 10m to grant Granted Jul 14, 2026
Patent 12668661
PROCESS FOR PREPARING POLYPROPYLENE CARBONATE
4y 7m to grant Granted Jun 30, 2026
Patent 12662568
STABILE SILANE MODIFIED POLYMER COMPOSITION AND METHOD
6y 2m to grant Granted Jun 23, 2026
Patent 12655246
XYLYLENE DIISOCYANATE COMPOSITION, XYLYLENE DIISOCYANATE MODIFIED COMPOSITION, POLYMERIZABLE COMPOSITION, RESIN, MOLDED ARTICLE, OPTICAL ELEMENT, AND LENS
4y 0m to grant Granted Jun 16, 2026
Patent 12649818
XYLYLENE DIISOCYANATE COMPOSITION AND OPTICAL COMPOSITION COMPRISING SAME
3y 0m to grant Granted Jun 09, 2026
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
55%
Grant Probability
79%
With Interview (+24.2%)
3y 7m (~11m remaining)
Median Time to Grant
Low
PTA Risk
Based on 991 resolved cases by this examiner. Grant probability derived from career allowance rate.

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