Prosecution Insights
Last updated: August 17, 2026
Application No. 18/027,480

BASE-CATALYZED ISOMERIZATION OF MUCONIC ACID DERIVATIVES

Non-Final OA §112
Filed
Mar 21, 2023
Priority
Sep 21, 2020 — provisional 63/080,959 +1 more
Examiner
FANG, SHANE
Art Unit
1766
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Iowa State University Research Foundation Inc.
OA Round
2 (Non-Final)
76%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allowance Rate
1152 granted / 1509 resolved
+11.3% vs TC avg
Strong +19% interview lift
Without
With
+18.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
70 currently pending
Career history
1569
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
54.6%
+14.6% vs TC avg
§102
19.8%
-20.2% vs TC avg
§112
12.8%
-27.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1509 resolved cases

Office Action

§112
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 . DETAILED ACTION A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant’s submission filed on 7/8/26 has been entered. The previous allowance has been withdrawn. Claim Rejections - 35 USC § 112 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. Claim(s) 26 and 103-112 (is)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, or for pre-AIA the applicant regards as the invention. Claim 26 fails to define R5, R6, R7, R8, and R12. It is uncertain whether R7 and R8 has the same definition as defined in those formulae in claim 40. Allowable Subject Matter The following is an examiner's statement of reasons for allowance: Claim(s) 26 and 103-112 is(are) provisionally allowable over the closest prior art: Korori et al. (Derwent JP 61243045). Claim(s) 40 and 92-102 is(are) allowable over the closest prior art: Korori et al. (Derwent JP 61243045). As to claims 26, 40, and 92-112, Korori (abs.) discloses a 3-methyladipic acid ester produced by reacting 4-methyl-3-pentene acid ester(A) or 3-methyl-3-pentene acid ester with an aliphatic alcohol, such as methanol, ethanol, n-propanol. The resultant 3-methyladipic acid ester would have the following structure: PNG media_image1.png 97 251 media_image1.png Greyscale terminated with methyl group or two similar structures terminated with ethyl or n-propyl. These esters meet the claimed structure, corresponding to the claimed R7=R8= methyl, ethyl or n-propyl, X=C, and R5=R6=H in formula IVb. However, Korori fails to teach the claimed structures in amended claim 26 and 40 and new claims 92-112. Therefore, claims 26 and 103-112 is(are) allowable in proviso the above 112b issue is resolved; claim(s) 40 and 92-102 is(are) allowable. 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 SHANE FANG whose telephone number is (571)270-7378. The examiner can normally be reached on Mon-Thurs. 8am-6pm. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Randy Gulakowski can be reached on 571.572.1302. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /SHANE FANG/Primary Examiner, Art Unit 1766
Read full office action

Prosecution Timeline

Mar 21, 2023
Application Filed
Feb 12, 2026
Non-Final Rejection mailed — §112
May 07, 2026
Response Filed
Jul 08, 2026
Request for Continued Examination
Jul 13, 2026
Response after Non-Final Action
Jul 30, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

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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
76%
Grant Probability
95%
With Interview (+18.8%)
2y 5m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1509 resolved cases by this examiner. Grant probability derived from career allowance rate.

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