Prosecution Insights
Last updated: April 18, 2026
Application No. 18/281,043

MANUFACTURING METHOD OF TRACK RACE OF TRIPOD CONSTANT VELOCITY JOINT

Non-Final OA §102§103§112
Filed
Feb 29, 2024
Examiner
BINDA, GREGORY JOHN
Art Unit
3679
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Erae Ams Co. Ltd.
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
2y 8m
To Grant
93%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
1456 granted / 1798 resolved
+29.0% vs TC avg
Moderate +12% lift
Without
With
+11.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
41 currently pending
Career history
1839
Total Applications
across all art units

Statute-Specific Performance

§101
1.9%
-38.1% vs TC avg
§103
19.4%
-20.6% vs TC avg
§102
39.5%
-0.5% vs TC avg
§112
36.4%
-3.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1798 resolved cases

Office Action

§102 §103 §112
Election/Restrictions Applicant's election with traverse of a manufacturing method of a track race (Group I) in the reply filed on March 13, 2026 is acknowledged. The traversal is on the ground(s) that the determination of shared technical feature in the restriction requirement fails to take into account that Group II includes the limitation “formed by the manufacturing method according to claim 1”. This is not found persuasive because it does not change the fact that corresponding technical feature. Namely, Group I fails to share the Group Il technical features of housing, tripod and ball arrays. The requirement is still deemed proper and is therefore made FINAL. Claims 6-7 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected invention, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on March 13, 2026. Claim Rejections - 35 USC § 112 Claims 1-5 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. Claim 1 lacks a transitional phrase thus making the scope of the claim unclear. Claim 5 is rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to include all the limitations of the claim upon which it depends. Claim 5 is directed to a product (a track race) but depends from a claim directed to a method of making the product. Since the patentability of a product does not rely on its method of production, claim 5 could be infringed without infringing on the claim from which it depends. As such, claim 5 fails the infringement test. See MPEP § 608.01(n)III. Claim Rejections - 35 USC § 102 Claims 1, 3 & 5 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Orain, US 4,741,723. Orain discloses a manufacturing method of a track race (5, 13a) disposed between a housing (10) and a spider (1) of a tripod constant velocity joint and having a ball groove (7) an opening of which is narrowed, wherein an end section (20) for forming the narrowed opening of the ball groove is formed on an intermediate workpiece (13a) for manufacturing the track race through a press or swaging process using a press or swaging die (see “projections 20 resulting from moulding or forming operation after assembly” at col. 4, line 68 and col. 5, line 1.) Claims 1-2 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Kitchin, US 3,918,777. Kitchin discloses a manufacturing method of a track race (12, 24) that could be disposed between a housing and a spider of a tripod constant velocity joint and having a ball groove (26) an opening (62) of which is narrowed, wherein an end section (68, 72) for forming the narrowed opening of the ball groove is formed on an intermediate workpiece (60) for manufacturing the track race through machining using a cutting tool (see ”cutting” at col. 4, line 56 and col. 5, line 32). Claims 1-3 & 5 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Godec, US 5,499,452. Godec discloses a manufacturing method of a track race (10) that could be disposed between a housing and a spider of a tripod constant velocity joint and having a ball groove (22) an opening of which is narrowed, wherein an end section (52) for forming the narrowed opening of the ball groove is formed on an intermediate workpiece (80, see also “flat ring” at col. 2, line 31) for manufacturing the track race through machining using a cutting tool (see “punched” at col. 2, line 32 and “cut” at col. 3, line 60) or press process (60) using a press die (62, 66). Claim Rejections - 35 USC § 103 Claim 4 is rejected under 35 U.S.C. 103 as being unpatentable over any one of Godec, Orain and Kitchin in view of Pohlman, US 8,818,939. Each of Godec, Orain and Kitchin discloses a method of forming an opening in a track race, but does not expressly disclose hardening heat treatment after forming the opening. At col. 3, lines 51-52, Pohlman teaches heat treating a track race (58) after forming an opening (see “apertures”) in a track race (58) in order to harden the track race. It would have been obvious to one of ordinary skill in the art to modify the method of any one of Godec, Orain and Kitchin by including heat treating after forming an opening in order to harden the track race as taught by Pohlman Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. At Fig. 5, Orain US 4,518,370 discloses a track race (35) disposed between a housing (36) and a spider (18B) of a tripod constant velocity joint (7B). Hase discloses a track race (19) disposed between a housing (1) and a spider (4) of a tripod constant velocity joint. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Greg Binda whose telephone number is (571)272-7077. The examiner can normally be reached 9:30-5:30 et. 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, Matthew Troutman can be reached at 571-270-3654. 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. /Greg Binda/Primary Examiner, Art Unit 3679
Read full office action

Prosecution Timeline

Feb 29, 2024
Application Filed
Mar 26, 2026
Non-Final Rejection — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601379
CONSTANT VELOCITY JOINT AND DRIVESHAFT INCLUDING SAME
2y 5m to grant Granted Apr 14, 2026
Patent 12577977
INTEGRATED COMPOSITE DRIVE SHAFTS
2y 5m to grant Granted Mar 17, 2026
Patent 12571431
FLEXIBLE METALLIC COUPLINGS FOR DRIVE SHAFTS
2y 5m to grant Granted Mar 10, 2026
Patent 12571432
UNIVERSAL JOINT ASSEMBLY FOR SURGICAL TOOLS
2y 5m to grant Granted Mar 10, 2026
Patent 12560205
CONSTANT VELOCITY JOINT AND DRIVESHAFT INCLUDING SAME
2y 5m to grant Granted Feb 24, 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
81%
Grant Probability
93%
With Interview (+11.7%)
2y 8m
Median Time to Grant
Low
PTA Risk
Based on 1798 resolved cases by this examiner. Grant probability derived from career allow rate.

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