Prosecution Insights
Last updated: August 17, 2026
Application No. 19/245,038

METHOD FOR APPROXIMATING A FRICTION VALUE

Non-Final OA §101
Filed
Jun 20, 2025
Priority
Dec 20, 2022 — DE 10 2022 134 152.6 +1 more
Examiner
HUYNH, HAI H
Art Unit
Tech Center
Assignee
ZF Friedrichshafen AG
OA Round
1 (Non-Final)
93%
Grant Probability
Favorable
1-2
OA Rounds
8m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 93% — above average
93%
Career Allowance Rate
1170 granted / 1253 resolved
+33.4% vs TC avg
Moderate +7% lift
Without
With
+7.1%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 9m
Avg Prosecution
17 currently pending
Career history
1262
Total Applications
across all art units

Statute-Specific Performance

§101
3.7%
-36.3% vs TC avg
§103
16.5%
-23.5% vs TC avg
§102
53.9%
+13.9% vs TC avg
§112
2.0%
-38.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1253 resolved cases

Office Action

§101
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 . Inventorship 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. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claims 1-19 are rejected under 35 U.S.C. 101 because the claimed invention is directed to an abstract idea without significantly more. The claim(s) recite(s) determining (evaluation) at least one load characteristic of the current vehicle configuration; determining (evaluation) a setpoint variable of the vehicle for a driving situation; determining (evaluation) a manipulated variable expected value, which specifies a predicted value of a manipulated variable to be provided to set the manipulated variable at a steering system, wherein the determination of the manipulated variable expected value is performed using the at least one load characteristic; determining (evaluation) an actual variable corresponding to the setpoint variable in the driving situation; determining (evaluation) a manipulated variable actual value, which is provided in the driving situation at the steering system, in order to modulate the actual variable; determining (evaluation) at least one of a manipulated variable deviation between the manipulated variable expected value and the manipulated variable actual value and a setpoint-actual deviation between the setpoint variable and the corresponding actual variable; and, approximating (judgement) the friction value based on the determined at least one load characteristic and based on the determined at least one of the manipulated variable deviation and the setpoint-actual deviation. There is no transformation, no controlling/adjusting the steering wheel based on the determined values. The claim(s) does/do not include additional elements that are sufficient to amount to significantly more than the judicial exception because the claim perform abstract idea of evaluation/judgement process without a controller/ecu for determining the values and controlling the steering wheel based on the determined values. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Choi et al 12,269,478 teaches a method of estimating maximum road friction coefficient. Any inquiry concerning this communication or earlier communications from the examiner should be directed to HAI H HUYNH whose telephone number is (571)272-4844. The examiner can normally be reached Monday - Friday 8:00 AM-4:00 PM. 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, Lindsay M Low can be reached at 571-272-1196. 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. /HAI H HUYNH/Primary Examiner, Art Unit 3747
Read full office action

Prosecution Timeline

Jun 20, 2025
Application Filed
Jul 15, 2026
Non-Final Rejection mailed — §101 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12703250
DISTRIBUTED AND GENERIC CONTROL ALLOCATION FOR MULTI-UNIT VEHICLE COMBINATIONS
1y 8m to grant Granted Aug 11, 2026
Patent 12703423
TURNING CONTROL DEVICE
1y 6m to grant Granted Aug 11, 2026
Patent 12697858
GLASS ASSEMBLY
2y 10m to grant Granted Aug 04, 2026
Patent 12692737
ARTICULATING HINGE COVER
2y 3m to grant Granted Jul 28, 2026
Patent 12691855
TRAILER PANIC BRAKING ASSIST
2y 0m to grant Granted Jul 28, 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
93%
Grant Probability
99%
With Interview (+7.1%)
1y 9m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1253 resolved cases by this examiner. Grant probability derived from career allowance rate.

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