Prosecution Insights
Last updated: April 19, 2026
Application No. 18/133,696

Imbalance Exciter for Soil Compaction Devices

Non-Final OA §112
Filed
Apr 12, 2023
Examiner
PATEL, KALPIT CHANDRAKANT
Art Unit
3671
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Wacker Neuson Produktion GmbH & Co. Kg
OA Round
1 (Non-Final)
100%
Grant Probability
Favorable
1-2
OA Rounds
3y 0m
To Grant
0%
With Interview

Examiner Intelligence

Grants 100% — above average
100%
Career Allow Rate
1 granted / 1 resolved
+48.0% vs TC avg
Minimal -100% lift
Without
With
+-100.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
11 currently pending
Career history
12
Total Applications
across all art units

Statute-Specific Performance

§103
51.5%
+11.5% vs TC avg
§102
33.3%
-6.7% vs TC avg
§112
12.1%
-27.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1 resolved cases

Office Action

§112
Notice of Pre-AIA or AIA Status 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 . 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. Acknowledgment is made of applicant's claim for foreign priority based on an application filed in Germany on April 14th, 2022. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION. —The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 8 and 17 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. Regarding Claims 8 and 17, the recitation of “the mounting device, the axle element, the stator, the rotor, and the unbalance mass” is vague and indefinite. As the parent claim recites a plurality of these elements, it is not clear if the claims at issue are intended to require all of the elements form respective excitation elements, or if only a subset are intended to. In light of the specification and in keeping with the interview with TIM E. NEWHOLM, it is believed that the claims are intended to require all individual elements for these respective exciters. Potential corrected language may include “wherein a plurality of stators” instead of “the stator”. Allowable Subject Matter Claims 1-7 and 9-16 are allowed. Regarding claims 1-7 and 9-16: While prior art of similar rotor and stator systems and function(s) thereof are known in soil compaction devices (see Ivanov US 2021/0172142, Steffen DE 10 2020 100 842 and Villwock et al. U.S. 10,794,014). These fail to disclose unbalanced masses attached directly to the side(s) of the rotor or wherein at least one of the stators surrounds only a circular segment of a circumference of the rotor assigned. The recitation of the claims in the instant application cannot be overcome by a case of obviousness. Additionally, the structures of Ivanov, Steffen and Villwock would require substantial modifications that would render them unrecognizable from their original structure and require an improper degree of hindsight to achieve. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KALPIT C. PATEL whose telephone number is (571)272-3053. The examiner can normally be reached 7.30am to 5pm. 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, Christopher Sebesta can be reached at (571) 272-0547. 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. /KALPIT C. PATEL/Examiner, Art Unit 3671 /CHRISTOPHER J SEBESTA/Supervisory Patent Examiner, Art Unit 3671
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Prosecution Timeline

Apr 12, 2023
Application Filed
Feb 26, 2026
Examiner Interview (Telephonic)
Feb 27, 2026
Non-Final Rejection — §112 (current)

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Prosecution Projections

1-2
Expected OA Rounds
100%
Grant Probability
0%
With Interview (-100.0%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 1 resolved cases by this examiner. Grant probability derived from career allow rate.

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