Prosecution Insights
Last updated: October 02, 2026
Application No. 18/687,973

PLASTICIZED BIOPOLYMER COMPOSITIONS AND METHODS OF MAKING THEREOF

Non-Final OA §102§103
Filed
Feb 29, 2024
Priority
Sep 01, 2021 — provisional 63/239,622 +2 more
Examiner
EGWIM, KELECHI CHIDI
Art Unit
Tech Center
Assignee
The Ohio State University
OA Round
1 (Non-Final)
70%
Grant Probability
Favorable
1-2
OA Rounds
6m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
566 granted / 809 resolved
+10.0% vs TC avg
Moderate +14% lift
Without
With
+14.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
32 currently pending
Career history
850
Total Applications
across all art units

Statute-Specific Performance

§101
1.5%
-38.5% vs TC avg
§103
27.7%
-12.3% vs TC avg
§102
47.6%
+7.6% vs TC avg
§112
20.0%
-20.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 809 resolved cases

Office Action

§102 §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/Restriction REQUIREMENT FOR UNITY OF INVENTION As provided in 37 CFR 1.475(a), a national stage application shall relate to one invention only or to a group of inventions so linked as to form a single general inventive concept (“requirement of unity of invention”). Where a group of inventions is claimed in a national stage application, the requirement of unity of invention shall be fulfilled only when there is a technical relationship among those inventions involving one or more of the same or corresponding special technical features. The expression “special technical features” shall mean those technical features that define a contribution which each of the claimed inventions, considered as a whole, makes over the prior art. The determination whether a group of inventions is so linked as to form a single general inventive concept shall be made without regard to whether the inventions are claimed in separate claims or as alternatives within a single claim. See 37 CFR 1.475(e). When Claims Are Directed to Multiple Categories of Inventions: As provided in 37 CFR 1.475 (b), a national stage application containing claims to different categories of invention will be considered to have unity of invention if the claims are drawn only to one of the following combinations of categories: (1) A product and a process specially adapted for the manufacture of said product; or (2) A product and a process of use of said product; or (3) A product, a process specially adapted for the manufacture of the said product, and a use of the said product; or (4) A process and an apparatus or means specifically designed for carrying out the said process; or (5) A product, a process specially adapted for the manufacture of the said product, and an apparatus or means specifically designed for carrying out the said process. Otherwise, unity of invention might not be present. See 37 CFR 1.475 (c). Restriction is required under 35 U.S.C. 121 and 372. This application contains the following inventions or groups of inventions which are not so linked as to form a single general inventive concept under PCT Rule 13.1. In accordance with 37 CFR 1.499, applicant is required, in reply to this action, to elect a single invention to which the claims must be restricted. Group I, claims 1-13, drawn to a composition. Group II claims 14-17, 19, 20 and 22, drawn to a method of making the composition. The groups of inventions listed above do not relate to a single general inventive concept under PCT Rule 13.1 because, under PCT Rule 13.2, they lack the same or corresponding special technical features for the following reasons: Groups I and II lack unity of invention because even though the inventions of these groups require the technical feature of the composition comprising eth biopolymer and a plasticizer, this technical feature is not a special technical feature as it does not make a contribution over the prior art in view of US 2015/0291788 and US 2022/0025174. During a telephone conversation with Rachel Near on 8/3/26, a provisional election was made without traverse to prosecute the invention of Group I, claims 1-13. Affirmation of this election must be made by applicant in replying to this Office action. Claims 14-17, 19, 20 and 22 are withdrawn from further consideration by the examiner, 37 CFR 1.142(b), as being drawn to a non-elected invention. Applicant is reminded that upon the cancelation of claims to a non-elected invention, the inventorship must be corrected in compliance with 37 CFR 1.48(a) if one or more of the currently named inventors is no longer an inventor of at least one claim remaining in the application. A request to correct inventorship under 37 CFR 1.48(a) must be accompanied by an application data sheet in accordance with 37 CFR 1.76 that identifies each inventor by his or her legal name and by the processing fee required under 37 CFR 1.17(i). The examiner has required restriction between product or apparatus claims and process claims. Where applicant elects claims directed to the product/apparatus, and all product/apparatus claims are subsequently found allowable, withdrawn process claims that include all the limitations of the allowable product/apparatus claims should be considered for rejoinder. All claims directed to a nonelected process invention must include all the limitations of an allowable product/apparatus claim for that process invention to be rejoined. In the event of rejoinder, the requirement for restriction between the product/apparatus claims and the rejoined process claims will be withdrawn, and the rejoined process claims will be fully examined for patentability in accordance with 37 CFR 1.104. Thus, to be allowable, the rejoined claims must meet all criteria for patentability including the requirements of 35 U.S.C. 101, 102, 103 and 112. Until all claims to the elected product/apparatus are found allowable, an otherwise proper restriction requirement between product/apparatus claims and process claims may be maintained. Withdrawn process claims that are not commensurate in scope with an allowable product/apparatus claim will not be rejoined. See MPEP § 821.04. Additionally, in order for rejoinder to occur, applicant is advised that the process claims should be amended during prosecution to require the limitations of the product/apparatus claims. Failure to do so may result in no rejoinder. Further, note that the prohibition against double patenting rejections of 35 U.S.C. 121 does not apply where the restriction requirement is withdrawn by the examiner before the patent issues. See MPEP § 804.01. Claim Rejections - 35 USC § 102 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-5 and 9 is/are rejected under 35 U.S.C. 102(a)(1)/ (a)(2) as being anticipated by Carfagnini et al. (US 2015/0291788). In the abstract, Carfagnini et al. teach a composition comprising polyhydroxyalkanoate, a biopolymer such as the copolymer of 3-hydroxybutyrate and 3-hydroxyvalerate p(3HB-co-3HV); and up to 20%, based on the total weight of the composition, of a plasticizer exemplified by an epoxidized fatty acid triglyceride oil from a biomass source (See ¶ 40). Thus, the requirements for rejection under 35 U.S.C. 102(a)(1)/(a)(2) are met. 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. Claims 10-13 are rejected under 35 U.S.C. 102(b) as anticipated by or, in the alternative, 35 U.S.C. 103(a) as being unpatentable over Carfagnini et al. (US 2015/0291788). While Carfagnini et al. do not expressly teach the disclosed properties of the claimed composition, it is reasonable that the composition of Carfagnini et al. would possess the presently claimed properties since the composition of Carfagnini et al. is essentially the same as the claimed composition and the USPTO does not have at its disposal the tools or facilities deemed necessary to make physical determinations of the sort. In any event, an otherwise old composition is not patentable regardless of any new or unexpected properties. In re Fitzgerald et al , 619 F.2d 67, 205 USPQ 594 (CCPA 1980). See MPEP § 2112 - § 2112.02. Even if assuming that the prior art references do not meet the requirements of 35 U.S.C. 102, it would still have been obvious to one of ordinary skill in the art, at the time the invention was made, to arrive at the same inventive composition because the disclosure of the inventive subject matter appears within the generic disclosure of the prior art. Claims 6-8 is/are rejected under 35 U.S.C. 103 as being unpatentable over Carfagnini et al. (US 2015/0291788) as applied to claims 1-5 and 9 above, and further in view of Vodovotz et al. (US 2022/0025174) or Medoff (CA 2722560). Carfagnini et al. differ from the claimed invention in that they do not identify spent coffee beans as a potential source for biomass used in preparing the composition. However, it is known in the art that spent coffee is a common form of biomass that is used for biomass sources end uses, such as taught by Vodovotz et al. and Medoff. In ¶’s 4, 5, 7 and 120, Vodovotz et al. teach a composition comprising a biopolymer, such as the copolymer of 3-hydroxybutyrate and 3-hydroxyvalerate p(3HB-co-3HV), where coffee by products are taught among biomass used in the composition.(See ¶ 126) In page. 16, line 22 to page 17, line 2, Medoff teach coffee bean grounds as a type of biomass material, among other biomass sources. Therefore, it would have been obvious to one having ordinary skill in the art at the time the invention was made, to use spent coffee as a source of biomass in preparing the composition of Carfagnini et al., based on the teachings of Vodovotz et al. and Medoff, motivated by a reasonable expectation of success. Any inquiry concerning this communication or earlier communications from the examiner should be directed to KELECHI CHIDI EGWIM whose telephone number is (571)272-1099. The examiner can normally be reached M-Th 9-7. 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, Robert Jones can be reached at (571) 270-7733. 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. /KELECHI C EGWIM/Primary Examiner, Art Unit 1762 KCE
Read full office action

Prosecution Timeline

Feb 29, 2024
Application Filed
Sep 08, 2026
Non-Final Rejection mailed — §102, §103 (current)

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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
70%
Grant Probability
84%
With Interview (+14.4%)
3y 1m (~6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 809 resolved cases by this examiner. Grant probability derived from career allowance rate.

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