Prosecution Insights
Last updated: October 04, 2026
Application No. 18/558,256

HEAT STABILIZED COMPOSITION

Non-Final OA §102
Filed
Oct 31, 2023
Priority
May 07, 2021 — EU 21172848.0 +1 more
Examiner
BLEDSOE, JOSHUA CALEB
Art Unit
Tech Center
Assignee
Byk-Chemie GmbH
OA Round
1 (Non-Final)
44%
Grant Probability
Moderate
1-2
OA Rounds
6m
Est. Remaining
97%
With Interview

Examiner Intelligence

Grants 44% of resolved cases
44%
Career Allowance Rate
44 granted / 99 resolved
-15.6% vs TC avg
Strong +53% interview lift
Without
With
+52.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
54 currently pending
Career history
173
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
62.0%
+22.0% vs TC avg
§102
16.1%
-23.9% vs TC avg
§112
16.4%
-23.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 99 resolved cases

Office Action

§102
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 . Claim Objections Claim 14 is objected to because of the following informalities: The word “to” is missing from in-between the words “polysaccharide” and “the” in line 5. Appropriate correction is required. Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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 1-8 and 13-24 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Maekawa (WO 2021/085630 A1, hereinafter referring to US 2022/0403168 A1). Regarding claim 1, Maekawa teaches a polyamide resin molded article (Abstract), comprising (A) a polyamide resin, and (B) chemically modified cellulose microfibers (Abstract). The chemically modified cellulose microfibers (B) are preferably acetylated ([0090]), and are included in amounts preferably ranging from 1 to 20 wt% of the composition ([0162]). This compositional amount overlaps with sufficient specificity to anticipate the claimed range of “0.10 to 8.0 % by weight.” Regarding claim 2, Maekawa teaches that the composition is typically not completely modified ([0063]). In such circumstances, non-modified cellulose moieties will be present therein, which reads on a cellulose moiety from the claimed list. Regarding claim 3, Maekawa teaches the preferred use of aliphatic polyamides or aromatic polyamides ([0051]). Regarding claim 4, Maekawa teaches that the polyamide preferably comprises 60 – 99 mass % of the composition ([0061]), which falls within and therefore anticipates the claimed range of “at least 75 % by weight.” Regarding claim 5, Maekawa teaches the optional incorporation of a heat stabilizer ([0197]). Regarding claim 6, Maekawa teaches that the preferred heat stabilizers are preferably antioxidants such as hindered phenol-based antioxidants ([0199]), which read on the claimed “organic heat stabilizer.” Regarding claim 7, Maekawa teaches that the preferred range of antioxidant is 0.1 to 2 parts by mass per 100 parts of polyamide resin ([0203]). Taking into account that the polyamide resin is preferably 60-99 mass % of the composition (0061]), the amount of antioxidant may range from about 0.167 to about 2.02 wt% of the composition, which falls within and therefore anticipates the claimed range of “from 0.010 % to 8.000% by weight.” Regarding claim 8, Maekawa teaches the formation of extruded/molded bodies of the inventive resin ([0211]-[0214]). Regarding claims 13 and 14, as described above, Maekawa teaches a composition containing all of the claimed components, including a polyamide and an acetylated. Furthermore, Maekawa teaches a method of melt-kneading said components ([0205]), which reads on the claimed methods. Regarding claim 15, as described above, Maekawa teaches that the chemically modified cellulose microfibers (B) are preferably acetylated ([0090]), which reads on the claimed “cellulose acetate.” Regarding claim 16, as described above, Maekawa teaches the preferred incorporation of a hindered phenol-based antioxidant as a heat stabilizer ([0199]), which meets the limitation of being “different” than the hydroxyalkylated polysaccharide because hindered phenols are not hydroxylated polysaccharides. Regarding claim 17, as described above, Maekawa teaches the preferred incorporation of a hindered phenol-based antioxidant as a heat stabilizer ([0199]), which reads on the claimed “phenolic antioxidant.” Regarding claims 18 and 19, Maekawa teaches that the preferred range of antioxidant heat stabilizer is 0.1 to 2 parts by mass per 100 parts of polyamide resin ([0203]). Taking into account that the polyamide resin is preferably 60-99 mass % of the composition (0061]), the amount of antioxidant may range from about 0.167 to about 2.02 wt% of the composition, which falls within and therefore anticipates the claimed ranges of “from 0.050 % to 4.000% by weight” and “from 0.100 to 2.000 % by weight.” Regarding claims 20-22, Maekawa teaches that the inventive composition is formed into components suitable for use in automobiles, including inter alia, a clutch, engine component gears, and a chassis ([0215]). Regarding claims 23-24, as described above, Maekawa teaches the incorporation of a heat stabilizer ([0199]). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JOSHUA CALEB BLEDSOE whose telephone number is (703)756-5376. The examiner can normally be reached Monday-Friday 8:00 a.m. - 5:00 p.m. 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, 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. /JOSHUA CALEB BLEDSOE/ Examiner, Art Unit 1762 /ROBERT S JONES JR/ Supervisory Patent Examiner, Art Unit 1762
Read full office action

Prosecution Timeline

Oct 31, 2023
Application Filed
Jun 22, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

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4y 0m to grant Granted Sep 08, 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
44%
Grant Probability
97%
With Interview (+52.7%)
3y 5m (~6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 99 resolved cases by this examiner. Grant probability derived from career allowance rate.

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