Prosecution Insights
Last updated: October 01, 2026
Application No. 18/498,361

Polymer-Based Wheel Assembly For Non-Pneumatic Tire

Final Rejection §103
Filed
Oct 31, 2023
Priority
Oct 31, 2022 — provisional 63/420,986
Examiner
KOTTER, KIP T
Art Unit
3615
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
DuPont de Nemours Inc.
OA Round
4 (Final)
68%
Grant Probability
Favorable
5-6
OA Rounds
0m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 68% — above average
68%
Career Allowance Rate
970 granted / 1429 resolved
+15.9% vs TC avg
Strong +21% interview lift
Without
With
+21.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
44 currently pending
Career history
1469
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
39.9%
-0.1% vs TC avg
§102
21.6%
-18.4% vs TC avg
§112
33.5%
-6.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1429 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 . Claim Rejections - 35 USC § 103 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 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. 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 1-4, 6-10, 13 and 17 are rejected under 35 U.S.C. 103 as being unpatentable over Statz (US 3,565,490; newly cited) in view of HYTREL 4556 (previously cited non-patent literature). Regarding claims 1 and 17, Statz, in the embodiment shown in Figs. 1 and 2, discloses a wheel assembly for a non-pneumatic tire 10 comprising: an inboard wheel segment (“right” side wheel plate member 12 shown in Figs. 1 and 2) comprising an inboard tubular body having an exterior inboard rim surface (unlabeled radially outer surface of inboard wheel plate member 12 shown in Figs. 1 and 2) a first inboard segment end (axially inboard end of the inboard wheel plate member 12) having an inboard annular lip (“right” side flange 24 shown in Figs. 1 and 2) extending radially outward from the exterior inboard rim surface (Figs. 1 and 2), and a second inboard segment end (axially outboard end of the inboard wheel plate member 12 shown in Figs. 1 and 2) having an inboard wheel segment connecting surface (unlabeled surface of “right” side central hub portion 22 shown in Figs. 1 and 2) an outboard wheel segment (“left” side wheel plate member 12 shown in Figs. 1 and 2) comprising an outboard tubular body having an exterior outboard rim surface (unlabeled radially outer surface of outboard wheel plate member 12 shown in Figs. 1 and 2), a first outboard segment end (axially outboard end of the outboard wheel plate member 12 shown in Figs. 1 and 2) having an outboard annular lip (“left” side flange 24 shown in Figs. 1 and 2) extending radially outward from the exterior outboard rim surface (Figs. 1 and 2), and a second outboard segment end (axially inboard end of the outboard wheel plate member 12 shown in Figs. 1 and 2) having an outboard wheel segment connecting surface (unlabeled surface of “left” side central hub portion 22 shown in Figs. 1 and 2); wherein the inboard and outboard wheel segment connecting surfaces are coupled together to form a joint (unlabeled joint shown in Fig. 1), wherein the exterior inboard and exterior outboard rim surfaces cooperate to form a wheel assembly rim surface (radially outer surface upon which the tire 10 is seated as shown in Fig. 1), and wherein the inboard and outboard wheel connecting surfaces abut one another, in a flush configuration (lines 51-55 of col. 2; Fig. 1). Statz fails to expressly disclose the inboard and outboard wheel segments being formed from a polymer-based composition consisting of a copolyether-ester having a melt flow rate of about 0.5 g/10 min or more up to about 10 g/10 min or less as determined at 220°C under a 2.16 kg load according to ISOI133. HYTREL 4556, however, teaches a polymer-based composition consisting of a copolyether-ester having a melt flow rate of about 0.5 g/10 min or more up to about 10 g/10 min or less as determined at 220°C under a 2.16 kg load according to ISOI133 (note page 1). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to have modified the wheel assembly of Statz by forming its inboard and outboard wheel segments from a polymer-based composition consisting of a copolyether-ester having a melt flow rate of about 0.5 g/10 min or more up to about 10 g/10 min or less as determined at 220°C under a 2.16 kg load according to ISOI133 for its polymer-based composition, such as taught by HYTREL 4556, as a well-known material that would have a reasonable expectation of success in providing predictable material and physical properties, such as exceptional toughness and resilience, high resistance to creep, impact and flex fatigue, and good melt stability. Regarding claim 2, Statz further discloses the inboard wheel segment connecting surface or the outboard wheel segment connecting surface is singular or plural (evident from Figs. 1 and 2). Regarding claim 3, Statz further discloses the joint extends through the wheel assembly rim surface (evident from Fig. 1). Regarding claim 4, Statz further discloses at least one fastener 14 that couples the inboard and outboard wheel connecting surfaces (lines 55-57 of col. 2; Figs. 1 and 2). Regarding claim 6, Statz further discloses the inboard and outboard wheel connecting surfaces each comprise a respective plurality of openings 30, the plurality of openings of the inboard connecting surface being aligned with the plurality of openings of the outboard connecting surface (lines 55-57 of col. 2; Figs. 1 and 2). Regarding claim 7, Statz further discloses the inboard and outboard wheel segment connecting surfaces extend radially inward and perpendicular to the rotational and longitudinal axis of the inboard and outboard tubular bodies (Fig. 1). Regarding claim 8, Statz further discloses the inboard and outboard wheel segment connecting surfaces substantially enclose the second inboard and outboard segment ends (Fig. 1). Regarding claim 9, Statz further discloses the inboard and outboard wheel segment connecting surfaces enclose the second inboard and outboard segment ends (Fig. 1). Regarding claim 10, Statz further discloses the inboard and outboard wheel segment connecting surfaces have at least one mounting bore hole at 34, 34 extending therethrough (Figs. 1 and 2). Regarding claim 13, the method by which the wheel assembly is formed (i.e., injection molded) is not afforded full patentable weight in a product claim (note MPEP 2113). Response to Arguments Applicant’s arguments with respect to the claims have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to KIP T KOTTER whose telephone number is (571)272-7953. The examiner can normally be reached 9:30-6 EST Monday-Friday. 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, Samuel (Joe) J Morano can be reached at (571)272-6684. 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. /Kip T Kotter/Primary Examiner, Art Unit 3615
Read full office action

Prosecution Timeline

Show 1 earlier event
Oct 29, 2025
Non-Final Rejection mailed — §103
Jan 05, 2026
Response Filed
Jan 23, 2026
Final Rejection mailed — §103
May 19, 2026
Request for Continued Examination
May 22, 2026
Response after Non-Final Action
Jun 05, 2026
Non-Final Rejection mailed — §103
Sep 03, 2026
Response Filed
Sep 18, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12746779
SADDLE-RIDING VEHICLE WHEEL DRUM
3y 3m to grant Granted Sep 29, 2026
Patent 12734843
Hub Embellisher Fixing Device
2y 6m to grant Granted Sep 15, 2026
Patent 12728668
SAFETY HUB AGAINST TIRE BURST
2y 7m to grant Granted Sep 08, 2026
Patent 12722421
HUB ASSEMBLY FOR HUMAN POWERED VEHICLE
2y 11m to grant Granted Sep 01, 2026
Patent 12722424
NON-PNEUMATIC TIRE
2y 9m to grant Granted Sep 01, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

5-6
Expected OA Rounds
68%
Grant Probability
89%
With Interview (+21.4%)
2y 6m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 1429 resolved cases by this examiner. Grant probability derived from career allowance rate.

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