Prosecution Insights
Last updated: October 26, 2026

Charles Ehne, USPTO Patent Examiner

Listed by the USPTO as EHNE, CHARLES

Tech Center 2100 • Art Units: 2113

This examiner grants 92% of resolved cases

Analysis

Charles Ehne manages a docket in Art Unit 2113 with 833 resolved cases. He maintains a high allowance rate of 92.1% and a median days to allowance of 791. This suggests a highly favorable environment for patent grants in Tech Center 2100. The 92.1% allowance rate indicates that the vast majority of cases reach issuance.

The interview lift is 8.1%, which provides a small additional benefit to the 92.1% allowance rate. Top applicants include American Express Travel Related Services Company, Inc., JPMorgan Chase Bank, N.A., and International Business Machines Corporation. Firms such as Cooper Legal Group LLC, Seed Intellectual Property Law Group LLP, and WOLF GREENFIELD & SACKS, P.C. are active in his docket.

With 833 resolved cases, the 791-day median pendency is a reliable indicator of prosecution efficiency. The 8.1% interview lift suggests that while written prosecution is very successful, interviews can still provide value. Practitioners should expect a straightforward path to grant given the current 92.1% allowance rate and the examiner's historical speed.

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

Performance Statistics

92.1%
Allow Rate
+37.1% vs TC avg
845
Total Applications
+8.1%
Interview Lift
791
Avg Prosecution Days
Based on 833 resolved cases, 2023–2026

Rejection Statute Breakdown

14.5%
§101 Eligibility
58.3%
§102 Novelty
10.3%
§103 Obviousness
4.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18204707 DETECTING AND PREDICTING ELECTRONIC STORAGE DEVICE DATA ANOMALIES Non-Final OA International Business Machines Corporation
18605682 USING APPLICATION PERFORMANCE EVENTS TO CALCULATE A USER EXPERIENCE SCORE FOR A COMPUTER APPLICATION PROGRAM Non-Final OA Cisco Technology, Inc.

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Frequently Asked Questions

What is examiner Charles Ehne's allowance rate?

92.1% of resolved applications examined by Charles Ehne were allowed (833 resolved cases), compared with 78.0% across Art Unit 2113 over the last five years.

Does an interview help with examiner Charles Ehne?

This examiner's interview lift is +8.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Charles Ehne take to allow a patent?

Applications allowed by Charles Ehne took 791 days on average from filing to allowance.

Which art unit does examiner Charles Ehne work in?

Charles Ehne examines applications in Art Unit 2113 in Tech Center 2100 (Computing & Software).

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