Prosecution Insights
Last updated: April 19, 2026
Application No. 18/791,956

MANUFACTURING METHOD OF LOW-SHRINKAGE PHOTOCURABLE MATERIAL

Non-Final OA §112
Filed
Aug 01, 2024
Examiner
BROOKS, KREGG T
Art Unit
1764
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Phrozen Tech Co. Ltd.
OA Round
1 (Non-Final)
56%
Grant Probability
Moderate
1-2
OA Rounds
3y 0m
To Grant
58%
With Interview

Examiner Intelligence

Grants 56% of resolved cases
56%
Career Allow Rate
395 granted / 701 resolved
-8.7% vs TC avg
Minimal +2% lift
Without
With
+2.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
72 currently pending
Career history
773
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
46.8%
+6.8% vs TC avg
§102
18.2%
-21.8% vs TC avg
§112
23.1%
-16.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 701 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 . Claims 1-7 are pending. Specification The disclosure is objected to because of the following informalities: in para. 0023, “dimethylformide” should be “dimethylformamide”. Appropriate correction is required. Claim Objections Claim 4 is objected to because of the following informalities: “dimethylformide” should be “dimethylformamide”. Appropriate correction is required. 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. 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. Claims 1-7 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. Claim 1 (from which claims 2-7 depend) recites a weight percentage of three components, but does not state what larger quantity these weight percentages are a percentage of, for example, a carbon black solution of low shrinkage photocurable material. Claim 4 (from which claim 5 depends) recites “a dimethylformide” twice. It is unclear whether the dimethylformide (dimethylformamide) in the steps is the same. The office recommends reciting a first and second amount of dimethylformamide for the two steps. Allowable Subject Matter Claims 1-7 would be allowable if rewritten or amended to overcome the objections and rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. The following is a statement of reasons for the indication of allowable subject matter: Lin (US 4,537,805) teaches compositions of acrylonitrile butadiene styrene resin (ABS), with reactive plasticizer (which may be considered a dispersant), which reactive plasticizer may be photocurable, thus a photocurable composition. Lin also teaches carbon black may be incorporated, but does not provide rationale to arrive at the recited method of addition and amounts therein (presuming the weight percentages are of the low-shrinkage photocurable material). While the addition of carbon black to ABS is known, for example, Chiao (US 4,243,577), the art does not provide sufficient rationale to arrive at the addition method and weight percentages as recited; moreover, such art is not assumed to be photocurable, since ABS is not generally considered a photocurable material. There exists “ABS-like” resins that are photocurable, see Leyden (US 2011/0293891), but the art suggests these are combination of photocurable epoxy and/or acrylate materials, and do not include ABS. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KREGG T BROOKS whose telephone number is (313)446-4888. The examiner can normally be reached Monday to Friday 9 am to 5:30 pm. 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 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. /KREGG T BROOKS/Primary Examiner, Art Unit 1764
Read full office action

Prosecution Timeline

Aug 01, 2024
Application Filed
Mar 27, 2026
Non-Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600832
FIBROUS MATERIAL IMPREGNATED WITH REACTIVE THERMOPLASTIC PREPOLYMER
2y 5m to grant Granted Apr 14, 2026
Patent 12590187
POLYMER COMPOSITE CAPABLE OF BEING QUICKLY DISSOLVED OR DISPERSED IN AQUEOUS SOLVENT AND PREPARATION METHOD AND APPLICATION THEREOF
2y 5m to grant Granted Mar 31, 2026
Patent 12590207
EPOXY COMPOSITION COMPRISING A BIO-BASED EPOXY COMPOUND
2y 5m to grant Granted Mar 31, 2026
Patent 12570778
ETHYLENE INTERPOLYMERS CATALYZED USING MIXED HOMOGENEOUS CATALYST FORMULATIONS
2y 5m to grant Granted Mar 10, 2026
Patent 12565031
STAINABLE MELAMINE LAMINATE PRODUCTS, COMPOSITIONS, AND METHODS OF MANUFACTURE
2y 5m to grant Granted Mar 03, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
56%
Grant Probability
58%
With Interview (+2.0%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 701 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month