Prosecution Insights
Last updated: April 19, 2026
Application No. 18/227,773

TORSIONAL DAMPER

Non-Final OA §112
Filed
Jul 28, 2023
Examiner
BINDA, GREGORY JOHN
Art Unit
3679
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
ZF Friedrichshafen AG
OA Round
3 (Non-Final)
81%
Grant Probability
Favorable
3-4
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

§112
Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed February 9, 2026in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on February 2, 2026 has been entered. Claim Rejections - 35 USC § 112 Claims 5-9 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Claim 5 recites the limitations, “the preloading element [is in abutting contact with the friction disk] and provides axial preload on the friction disk indirectly via the holding element.” Applicant has not pointed out where this combination of limitations supported, nor does there appear to be a written description of this combination of limitations in the application as originally filed. Claim 6 recites the limitations, “a rotational securing contour is formed on the friction ring, and a rotational securing contour is formed on the holding element, each of said contours corresponding to one another and providing a connection for conjoint rotation under axial preload [and the preloading element is in abutting contact with the friction disk].” Applicant has not pointed out where this combination of limitations supported, nor does there appear to be a written description of this combination of limitations in the application as originally filed. Claim 9 is 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 9 recites the limitation "the rotational securing contour". There is insufficient antecedent basis for this limitation in the claim because neither such contour is previously identified as “the rotational securing contour”. Allowable Subject Matter Claims 1, 3-4 & 10 are allowed. Conclusion 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

Jul 28, 2023
Application Filed
Aug 11, 2025
Non-Final Rejection — §112
Oct 23, 2025
Response Filed
Nov 10, 2025
Final Rejection — §112
Feb 02, 2026
Response after Non-Final Action
Feb 09, 2026
Request for Continued Examination
Mar 01, 2026
Response after Non-Final Action
Mar 27, 2026
Non-Final Rejection — §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

3-4
Expected OA Rounds
81%
Grant Probability
93%
With Interview (+11.7%)
2y 8m
Median Time to Grant
High
PTA Risk
Based on 1798 resolved cases by this examiner. Grant probability derived from career allow rate.

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