Prosecution Insights
Last updated: April 19, 2026
Application No. 18/231,402

COMPOSITE STRUCTURES AND METHODS OF FORMING COMPOSITE STRUCTURES

Non-Final OA §103
Filed
Aug 08, 2023
Examiner
PLESZCZYNSKA, JOANNA
Art Unit
1783
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Astro Tech Co., Ltd.
OA Round
4 (Non-Final)
53%
Grant Probability
Moderate
4-5
OA Rounds
3y 4m
To Grant
82%
With Interview

Examiner Intelligence

Grants 53% of resolved cases
53%
Career Allow Rate
357 granted / 668 resolved
-11.6% vs TC avg
Strong +29% interview lift
Without
With
+28.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
39 currently pending
Career history
707
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
55.8%
+15.8% vs TC avg
§102
11.2%
-28.8% vs TC avg
§112
27.1%
-12.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 668 resolved cases

Office Action

§103
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 . Continued Examination Under 37 CFR 1.114 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 Jan. 27, 2026 has been entered. Claim Rejections - 35 USC § 103 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. Claim(s) 1-4 is/are rejected under 35 U.S.C. 103 as being unpatentable over Allsop et al. (US 5456481) (“Allsop”), in view of Al-Sheyyab et al. (US 2014/0191492 A1) (“Al-Sheyyab”). With respect to claim 1, Allsop discloses a structure (abstr.) comprising a first composite structure component – element 236 – including a thermoplastic material including a plurality of fibers (col. 9, lines 16-52), an outside edge – Fig. 17 – and an inside edge formed of material including a thermoplastic material (col. 9, lines 49-51), being continuous and formed in a closed loop (Fig. 17), and a second composite structure – element 238 including a thermoplastic material including a plurality of fibers (col. 9, lines 16-52), an outside edge – Fig. 17, and an inside edge formed of a material including a thermoplastic material (col. 9, lines 49-51), being continuous and formed in a closed loop (Fig. 17), wherein the inside edge of the first composite structure component is edge-to-edge joined to the inside edge of the second structure component, wherein the outside edge of the first composite structure component is edge-to-edge joined to the outside edge of the second composite structure component, and wherein an interior volume is formed between adjacent surfaces of the first and second composite components (col. 9, lines 30-67, col. 10, lines 1-12, Fig. 17). Allsop discloses that the first and second composite structure components comprise thermoplastic material including fibers (col. 9, lines 49-52), but is silent with respect to the first and second composite structure components comprising a plurality of sheets of thermoplastic material, the inside edges formed exclusively of the thermoplastic material alone. Al-Sheyyab discloses a structure to be used in a bicycle frame (abstr.), as is the structure of Allsop (abstr.), the structure comprising two units formed of a plurality of sheets of thermoplastic material, the thermoplastic material including thermoplastic fibers – aramid fibers (0020-0022). It would have been obvious to one of ordinary skill in the art prior to the effective filing date of the claimed invention to include thermoplastic fibers in the thermoplastic material of Allsop. It has been held to select a known material based on its suitability for its intended use to be an obvious design choice. In re Leshin, 277 F.2d 197, 125 USPQ 416 (CCPA 1960). It would have been obvious to one of ordinary skill in the art prior to the effective filing date of the claimed invention to form the first and second composite structure components of Allsop wherein the thermoplastic material includes thermoplastic fibers, the components comprising plurality of sheets, as it is known in the art of bicycle structures to form them from plurality of sheets. Since in the structure of Allsop and Al-Sheyyab the material of components includes thermoplastic material comprising a plurality of thermoplastic fibers, it would be obvious to one of ordinary skill in the art prior to the effective filing date of the claimed invention that in the structure according to the references the inside edges of the first and second composite structure components are formed exclusively of a thermoplastic material. Regarding claim 2, Allsop and Al-Sheyyab teach the structure of claim 1. Allsop discloses the structure comprises a first auxiliary aperture formed in the first composite structure – element 290 (col. 10, lines 8-15). As to claim 3, Allsop and Al-Sheyyab teach the structure of claim 2. Allsop discloses the structure comprises a second auxiliary aperture formed in the second composite structure – the first and second composite structure components are mirror images (col. 10, lines 8-15). With respect to claim 4, Allsop and Al-Sheyyab teach the structure of claim 3. Since the first and second composite structure components are mirror images of each other, it would be obvious to one of ordinary skill in the art that the first auxiliary aperture is adjacent to the second auxiliary aperture in the structure of Allsop. Response to Arguments Applicant’s arguments filed on Nov. 28, 2025 have been fully considered. Applicant’s arguments with respect to Al-Sheyyab have been considered but are moot because the new ground of rejection does not rely on that reference as applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JOANNA PLESZCZYNSKA whose telephone number is (571)270-1617. The examiner can normally be reached M-F ~ 11:30-8. 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, Maria Veronica Ewald can be reached at 571-272-8519. 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. /Joanna Pleszczynska/ Primary Examiner, Art Unit 1783
Read full office action

Prosecution Timeline

Aug 08, 2023
Application Filed
Oct 19, 2024
Non-Final Rejection — §103
Dec 31, 2024
Response Filed
Apr 05, 2025
Non-Final Rejection — §103
Jun 30, 2025
Response Filed
Sep 27, 2025
Final Rejection — §103
Nov 28, 2025
Response after Non-Final Action
Jan 27, 2026
Request for Continued Examination
Jan 30, 2026
Response after Non-Final Action
Feb 05, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12589561
PREPREG LAMINATE, COMPOSITE STRUCTURE, AND METHOD FOR MANUFACTURING COMPOSITE STRUCTURE
2y 5m to grant Granted Mar 31, 2026
Patent 12582198
ORTHOPEDIC INSOLES FOR USE IN OPEN FOOTWEAR
2y 5m to grant Granted Mar 24, 2026
Patent 12577778
WOOD FIBRE BASED PANEL AND A METHOD FOR OBTAINING SUCH PANEL
2y 5m to grant Granted Mar 17, 2026
Patent 12577829
BUILDING STRUCTURE WINDOW WITH OPTICALLY TRANSPARENT AND SELF-COOLING COATINGS
2y 5m to grant Granted Mar 17, 2026
Patent 12571163
SPACE FILLING MATERIAL, METHOD FOR MANUFACTURING SAME, AND SPACE FILLING STRUCTURE
2y 5m to grant Granted Mar 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

4-5
Expected OA Rounds
53%
Grant Probability
82%
With Interview (+28.6%)
3y 4m
Median Time to Grant
High
PTA Risk
Based on 668 resolved cases by this examiner. Grant probability derived from career allow rate.

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