Prosecution Insights
Last updated: July 17, 2026
Application No. 18/702,102

DISPERSIBLE AND BIODEGRADABLE MODIFIED STARCH ADDITIVE FOR REINFORCED POLYMERS

Non-Final OA §102§103§112
Filed
Apr 17, 2024
Priority
Oct 18, 2021 — provisional 63/256,972 +1 more
Examiner
MCKINNON, LASHAWNDA T
Art Unit
1789
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Mito Material Solutions Inc.
OA Round
1 (Non-Final)
53%
Grant Probability
Moderate
1-2
OA Rounds
1y 2m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 53% of resolved cases
53%
Career Allowance Rate
400 granted / 751 resolved
-11.7% vs TC avg
Strong +31% interview lift
Without
With
+31.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
60 currently pending
Career history
826
Total Applications
across all art units

Statute-Specific Performance

§103
92.2%
+52.2% vs TC avg
§102
3.6%
-36.4% vs TC avg
§112
3.0%
-37.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 751 resolved cases

Office Action

§102 §103 §112
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 Objections Claim 15 is objected to because of the following informalities: A period is required at the end of each claim. 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 17 and 19 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. Regarding claim 19, the phrase "preferably" renders the claim indefinite because it is unclear whether the limitations following the phrase are part of the claimed invention. See MPEP § 2173.05(d). Applicant is advised to amend the claim. Claims 17 and 19 recited “selected from”. In order to recite a proper markush claim, it is advised to recite “selected from the group consisting of”. 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. Claims 1-15 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Martinez-Pardo (Thermoplastic starch-nanohybrid films with polyhedral oligomeric silsesquioxane, Carbohydrate Polymers, Volume 173, 2017, Pages 170-177). Regarding claims 1 and 6-7, Martinez-Pardo teaches a starch-POSS additive comprising a starch that is at least 30% by weight of amylose (80% is taught) and POSS coupled to the starch (Abstract, polyhedral oligomeric silsesquioxane (POSS). POSS modified thermoplastic starch increased water resistance of TPS film.) comprising: a starch that is at least 30% by weight amylose (Pg. 171, Col. 2, 2.1. Materials, Pre-gelatinised hydroxypropylated corn starch (PenfordTM A939) was used as the starch. Regarding claim 2, Martinez-Pardo discloses the starch-POSS additive of claim 1, wherein the POSS is covalently linked to the starch through an amide, an ether, a silanol, an acrylate, or an ester (Abstract; Pg. 171, Col. 2, 2.1. Materials; Pg. 172, Col. 1, 2.4.-Col. 2, 2.4.1.; Fig. 1, i.e., the starch will bond to the POSS via the epoxy group forming an ether linkage). Regarding claims 3-5, Martinez-Pardo discloses the starch-POSS additive of claim 1, wherein the POSS comprises an epoxy group and is a T8 POSS and the starch-POSS comprises fewer than 8 epoxy groups (Abstract; Pg. 172, Col. 1, 2.4.-Col. 2, 2.4.1.; Fig. 1; Pg. 171, Col. 2, 2.1. Materials, epoxy-POSS). Regarding claims 8-11, Martinez-Pardo teaches a starch-POSS additive that possesses the claimed IR peaks at the claimed peaks [Figure 3a-d] . It is noted the claim language recites “about” and Martinez-Pardo reads on the claimed “about ranges. Regarding claims 12-13, Martinez-Pardo teaches POSS in the claimed amount (Pg. 171, Col. 2, 2.1). Regarding claims 14-15, Martinez-Pardo teaches (based upon page 172) the claimed amount of carbon (~44%), oxygen (~44%) and silicon (~4.5%). This is based upon calculation and would be within the 20+/- margin of “about” with elemental analysis. 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 12-13, 16-19 and 38 are rejected under 35 U.S.C. 103 as being unpatentable over Martinez-Pardo (Thermoplastic starch-nanohybrid films with polyhedral oligomeric silsesquioxane, Carbohydrate Polymers, Volume 173, 2017, Pages 170-177) in view of Khemani et al. (PG Pub. 2017/0283579). Regarding claims 12-13, In the alternative, Khemani et al. teach composite material with the claimed amount of POSS [table 6] in order to make composite material for packaging. It would have been obvious to one of ordinary skill in the art to use the amount of POSS of Khemani et al. in Martinez-Pardo in order to make composite material for packaging and arrive at the claimed invention. Regarding claim 16-19, Martinez-Pardo is silent regarding the claimed composite material. However, Khemani et al. teaches a composite comprising a polymeric material (e.g. polyester which his thermoplastic) [0019] and starch POSS dispersed in the polymeric material in order to improve mechanical and functional properties. It would have been obvious to use the composite with polymeric material of Khemani et al. with the starch-POSS of Martinez-Pardo and arrive at the claimed invention. Regarding claim 38, Martinez-Pardo teaches the claimed amylose content, but is silent regarding the claimed method. However, Khemani et al. teaches A method of making a starch-POSS material, the method comprising combining a starch and a POSS comprising at least a linking group in the presence of a catalyst and a solvent to form a starch-POSS material, and isolating the starch-POSS material Para. [0041], 3 parts by weight of the glycidyl isobutyl POSS formulation and 10 parts by weight of starch were dissolved in dimethyl sulfoxide solvent. 10 mg of aluminum triflate catalyst was added in the mixture, and the reaction was refluxed for one hour at 80°C.; Para. [0042], Nanomaterial dispersion was obtained by magnetically stirring for about 10 minutes a 5% alcoholic solution of PVP-K90 and the grafted nanomaterial.) in order to provide composite material with improved rheological properties and mechanical properties. It would have been obvious to one of ordinary skill in the art to use the process of Khemani et al. in Martinez-Pardo in order to improve rheological and mechanical properties and arrive at the claimed invention. Prior Art Not Used But Relevant PG Pub. 2011/0120940 teaches polymeric films made from polyhedral oligomeric silsesquioxane (POSS) and a hydrophilic comonomer. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SHAWN MCKINNON whose telephone number is (571)272-6116. The examiner can normally be reached Monday thru Friday generally 8:00am-5:00pm 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, Marla McConnell can be reached at 571-270-7692. 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. /Shawn Mckinnon/ Examiner, Art Unit 1789
Read full office action

Prosecution Timeline

Apr 17, 2024
Application Filed
Jun 03, 2026
Non-Final Rejection mailed — §102, §103, §112 (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
53%
Grant Probability
84%
With Interview (+31.1%)
3y 5m (~1y 2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 751 resolved cases by this examiner. Grant probability derived from career allowance rate.

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