Prosecution Insights
Last updated: August 16, 2026
Application No. 18/383,442

METHYL-METHACRYLATE-CONTAINING COMPOSITION AND METHOD FOR PRODUCING METHYL METHACRYLATE POLYMER

Non-Final OA §112
Filed
Oct 24, 2023
Priority
Apr 28, 2021 — JP 2021-075628 +1 more
Examiner
HUHN, RICHARD A
Art Unit
Tech Center
Assignee
Mitsubishi Chemical Corporation
OA Round
1 (Non-Final)
67%
Grant Probability
Favorable
1-2
OA Rounds
1m
Est. Remaining
72%
With Interview

Examiner Intelligence

Grants 67% — above average
67%
Career Allowance Rate
604 granted / 902 resolved
+7.0% vs TC avg
Moderate +6% lift
Without
With
+5.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
28 currently pending
Career history
928
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
41.4%
+1.4% vs TC avg
§102
18.7%
-21.3% vs TC avg
§112
26.1%
-13.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 902 resolved cases

Office Action

§112
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 U.S.C. § 112(b) 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. Claims 15-16 are rejected under 35 U.S.C. § 112(b) as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor regards as the invention. Claim 15 recites a method of “polymerizing a polymeric composition comprising the methyl methacrylate-containing composition according to claim 1” (emphasis added). The claim and the specification do not provide a definition of the term “polymeric”. The ordinary meaning of the term “polymeric” is of or relating to a polymer. The meaning of a composition that ‘relates’ to a polymer has multiple interpretations, and the claim does not set forth the scope of such a polymeric composition with reasonable clarity. As some non-limiting examples, the phrase “polymeric composition” may be interpreted alternatively to mean: a composition (whether monomeric or polymeric) that is intended for making a polymer by polymerization; a polymer that includes repeating units of the further-recited methyl methacrylate-containing composition; or a composition including both a polymer as well as the further-recited methyl methacrylate-containing composition. Because the recited step of polymerizing a polymeric composition is subject to multiple interpretations, the claim does not set forth the scope of the step of polymerizing a polymeric composition with reasonable clarity. Claim 16 is dependent upon claim 15, and it is indefinite for the same reason. Allowable Subject Matter The following is an examiner’s statement of reasons for allowance. The following reference is noted. Journal of Polymer Science. Part A, Polymer Chemistry. 2010. 48(1), 34-47 to Nicolas et al. describes a process of (see Expt. 5) that includes the formation of a composition (see the process in the paragraph bridging pp. 35-36) that includes 9.23 M methyl methacrylate and 0.21 M acrylonitrile, corresponding to about 98.8 wt% of methyl methacrylate and about 1.2 wt% of acrylonitrile. The examiner is unaware of any prior art that describes or suggests the methyl methacrylate-containing compositions of claims 1-14. Claims 1-14 are allowed. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to RICHARD A. HUHN whose telephone number is (571)270-7345. The examiner can normally be reached Monday through Friday, 9 AM to 6 PM EST. 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. /RICHARD A. HUHN/Primary Examiner, Art Unit 1764
Read full office action

Prosecution Timeline

Oct 24, 2023
Application Filed
Jul 16, 2026
Non-Final Rejection mailed — §112 (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

1-2
Expected OA Rounds
67%
Grant Probability
72%
With Interview (+5.5%)
2y 11m (~1m remaining)
Median Time to Grant
Low
PTA Risk
Based on 902 resolved cases by this examiner. Grant probability derived from career allowance rate.

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