Prosecution Insights
Last updated: May 29, 2026
Application No. 18/326,901

HYBRID FIBER CONCRETE REINFORCEMENT

Non-Final OA §103
Filed
May 31, 2023
Examiner
HALL, DEVE V.
Art Unit
1763
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Saudi Arabian Oil Company
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
680 granted / 909 resolved
+9.8% vs TC avg
Strong +17% interview lift
Without
With
+16.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
32 currently pending
Career history
945
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
78.3%
+38.3% vs TC avg
§102
10.3%
-29.7% vs TC avg
§112
3.8%
-36.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 909 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 . Election/Restrictions Applicant’s election without traverse of Group I (claims 1-5) in the reply filed on 03/06/2026 is acknowledged. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or non-obviousness. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1-3 are rejected under 35 U.S.C. 103 as being unpatentable over CARTWRIGHT et al. (U.S. Publication No. 2012/0313307, hereinafter CARTWRIGHT). Regarding claims 1-3, CARTWRIGHT teaches fiber-reinforced polymer composites (Abstract) wherein the composites comprise polymer matrix (e.g. elastomer) reinforced with a plurality of fibers [0042]. The composites can be used for rebar (Claim 12). The polymer include polyurethane , thermoplastic elastomers, plasticized epoxies ([0053]; Claims 3 and 4), and vinyl ester [0082] in the range between about 30 vol% to about 70 vol% [0059] and the fibers include carbon [0046] and continuous fibers including fiberglass in the range between about 30 vol% to about 70 vol% [0061]. The elastomer may be impregnated into a dry preform of the selected plurality of fibers [0059]. The invention may be applied to a variety of applications including civil engineering, structures, buildings, bridges, and etc. [0096]. However, CARTWRIGHT does not explicitly teach 55-85 vol. % of a fiber mixture. Given CARTWRIGHT teaches the polymer matrix is reinforced with a plurality of fibers of carbon fibers and fiberglass in the range between about 30 vol% to about 70 vol%, it would have been obvious to one of ordinary skill in the art at the time the invention was made to select the portion of the prior art's range which is within the range of applicant's claims because it has been held to be obvious to select a value in a known range by optimization for the best results. As to optimization results, a patent will not be granted based upon the optimization of result effective variables when the optimization is obtained through routine experimentation unless there is a showing of unexpected results which properly rebuts the prima facie case of obviousness. See In re Boesch, 627 F.2d 272,276,205 USPQ 215,219 (CCPA 1980). See also In re Woodruff 919 F.2d 1575, 1578,16 USPQ2d 1934, 1936-37 (Fed. Cir. 1990), and In re AIIer, 220 F.2d 454,456,105 USPQ 233,235 (CCPA 1955). Allowable Subject Matter Claims 4 and 5 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. CARTWRIGHT et al., one of the closest prior art of record fails to disclose the FRP rebar comprises 1-3 wt% of a coupling agent and wherein the FRP rebar comprises 97-99 wt% of the hybrid composition. EDWARDS et al., one of the closest prior art of record, fails to teach a FRP rebar comprising a hybrid composition as claimed and wherein the FRP rebar comprises 1-3 wt% of a coupling agent and wherein the FRP rebar comprises 97-99 wt% of the hybrid composition. BRANDSTROM, one of the closest prior art of record, fails to teach a FRP rebar comprising a hybrid composition as claimed and wherein the FRP rebar comprises 1-3 wt% of a coupling agent and wherein the FRP rebar comprises 97-99 wt% of the hybrid composition. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to DEVE V HALL whose telephone number is (571)270-7738. The examiner can normally be reached M-F, 9 am-5 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, Joseph Del Sole can be reached at (571) 272-1130. 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. DEVE V. HALL Primary Examiner Art Unit 1763 /DEVE V HALL/Primary Examiner, Art Unit 1763
Read full office action

Prosecution Timeline

May 31, 2023
Application Filed
Mar 31, 2026
Non-Final Rejection mailed — §103
Apr 17, 2026
Interview Requested
May 12, 2026
Applicant Interview (Telephonic)
May 13, 2026
Examiner Interview Summary

Precedent Cases

Applications granted by this same examiner with similar technology

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EPOXY RESIN COMPOSITION, PREPREG, FIBER-REINFORCED RESIN MOLDED BODY, AND INTEGRATED PRODUCT
3y 0m to grant Granted May 26, 2026
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3y 0m to grant Granted May 19, 2026
Patent 12630704
POLYPROPYLENE-BASED GRAFT POLYMER, THERMOPLASTIC RESIN COMPOSITION, AND MOLDED ARTICLE THEREOF
3y 0m to grant Granted May 19, 2026
Patent 12623262
GEOGRID PREPARED BY RECYCLING MEDICAL WASTE AND PREPARATION METHOD THEREFOR, AND USE IN FOUNDATION REINFORCEMENT
3y 7m to grant Granted May 12, 2026
Patent 12624136
PHTHALATE-FREE POLYPROPYLENE HOMOPOLYMER HAVING HIGH STIFFNESS PROPERTIES
3y 4m to grant Granted May 12, 2026
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
75%
Grant Probability
92%
With Interview (+16.7%)
2y 9m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 909 resolved cases by this examiner. Grant probability derived from career allowance rate.

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