Prosecution Insights
Last updated: April 19, 2026
Application No. 18/265,141

METHOD OF SPONTANEOUSLY PATTERNING A POLYMER DURING FRONTAL POLYMERIZATION

Non-Final OA §102
Filed
Jun 02, 2023
Examiner
HUHN, RICHARD A
Art Unit
1764
Tech Center
1700 — Chemical & Materials Engineering
Assignee
The Board Of Trustees Of The University Of Illinois
OA Round
1 (Non-Final)
66%
Grant Probability
Favorable
1-2
OA Rounds
2y 11m
To Grant
72%
With Interview

Examiner Intelligence

Grants 66% — above average
66%
Career Allow Rate
585 granted / 882 resolved
+1.3% vs TC avg
Moderate +6% lift
Without
With
+6.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
36 currently pending
Career history
918
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
37.2%
-2.8% vs TC avg
§102
22.3%
-17.7% vs TC avg
§112
25.3%
-14.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 882 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 . Claim Rejections – 35 U.S.C. § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. Claims 1-3, 7-9, 16, 19, and 21 are rejected under 35 U.S.C. § 102(a)(1) as being anticipated by J. Chem. Soc. Faraday Trans. 1996, 92, 2825-2837 (herein “Pojman”). As to claims 1 and 21: Pojman describes a method of frontal polymerization (see sections 6 and 6.1 on p. 2832) comprising activating a monomer solution (see benzoyl peroxide and methacrylic acid in sections 5.1-5.3 on p. 2831) to initiate a polymerization front that propagates longitudinally away from the initiation region (see Fig. 11 on p. 2832). The continual polymerization is evidence that the polymerization reaction results in the spontaneous heating of monomer solution sufficient to propagate the polymerization front. The polymerization occurs in a pulsating manner, and the phenomenon quickly repeats itself many times (see section 6.1 on p. 2832), corresponding to the presently recited cyclical polymerization reaction. The product has a pancake structure with layers of incompletely reacted materials between completely converted product, corresponding to the presently recited patterned polymer. As to claims 2 and 19: The cited product has a pancake structure with layers of incompletely reacted materials between completely converted product, corresponding to the presently recited spatial variations in mechanical properties. As to claim 3: The cited process includes immersing the reaction vessel in a 25 °C water bath (see section 6.1 at the top of p. 2832). As to claims 7-8: The cited process includes front advances of 1.5 or 2 mm intervals (see section 6.1 at the top of p. 2832). As to claim 9: The cited process is performed in a test tube (see section 6.1 at the top of p. 2832). As to claim 16: The cited process includes benzoyl peroxide (see sections 5.1-5.3 on p. 2831) which undergoes a chemical reaction (decomposition) at a temperature-dependent rate. Allowable Subject Matter Claims 4-6, 10-11, 13-15, 17-18, and 20 are objected to as being dependent upon a rejected base claim, but they would be allowable if written in independent form. 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
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Prosecution Timeline

Jun 02, 2023
Application Filed
Jan 15, 2026
Non-Final Rejection — §102 (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

1-2
Expected OA Rounds
66%
Grant Probability
72%
With Interview (+6.0%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 882 resolved cases by this examiner. Grant probability derived from career allow rate.

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