Prosecution Insights
Last updated: October 04, 2026

Nippon Piston Ring Co. Ltd.

Technology area: Transportation, E-Commerce & Mechanical Systems

1 pending office actions • 1 art units • 1 examiners • 0 of 1 (0%) have an AI response strategy ready • 2 patents granted in the last 365 days

Analysis

Nippon Piston Ring Co. Ltd. currently has 2 pending office actions within the Transportation, E-Commerce & Mechanical Systems technology area. These actions are assigned to 2 distinct examiners, ensuring that each pending matter is being evaluated by a different official with their own perspective on the claims. The involvement of 2 distinct art units further suggests that the company's mechanical systems are being categorized into separate technical specialties within the patent office.

Nathan Cumar is the busiest examiner for this portfolio, currently overseeing 1 pending action. Because the 2 pending office actions are split between 2 art units, the prosecution strategy must address different sets of examination guidelines and technical prior art. The company's current patent office activity is limited but technically divided across multiple administrative fronts, requiring the applicant to manage separate tracks of communication and legal argument.

With 2 pending office actions and 2 distinct examiners, the portfolio avoids the risk of being entirely dependent on a single official's decision. However, the use of 2 distinct art units means that the company must be prepared for different technical standards to be applied to its Transportation, E-Commerce & Mechanical Systems innovations. Practitioners should monitor the progress of both Nathan Cumar and the other assigned examiner to identify any diverging trends in how the company's mechanical technologies are being received.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Portfolio Summary

1
Total Pending OAs
1
Non-Final OAs
0
Final Rejections
0
Advisory / Quayle

Case Difficulty Mix

Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.

0
Hard (0%)
1
Medium (100%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only1 (100%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

0
Life Sciences
0% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
1
Mechanical / Eng
100% of docket
0
Business / Other
0% of docket

Time-on-OA Estimate

Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.

10 h
Manual time on pending OAs
2 h
Time saved (low, 20%)
4 h
Time saved (mid, 35%)
0.1 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
CUMAR, NATHAN 1 78.8% +14.4%

Interview Candidates (1)

Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
19107245 SLIDING MEMBER, MANUFACTURING METHOD THEREOF, AND COATING FILM CUMAR, NATHAN —

Top Art Units

Art UnitApps
3675 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19107245 SLIDING MEMBER, MANUFACTURING METHOD THEREOF, AND COATING FILM CUMAR, NATHAN 3675 §103 Non-Final OA — Pending Feb 27, 2025

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