Prosecution Insights
Last updated: October 26, 2026

Edwin Coleman Mitchell, USPTO Patent Examiner

Listed by the USPTO as MITCHELL, EDWIN COLEMAN

Tech Center 1600 • Art Units: 1619 1672

This examiner grants 32% of resolved cases

Analysis

MITCHELL, EDWIN COLEMAN is assigned to tech center 1600 and art unit 1619. The record includes 112 resolved cases, with an allowance rate of 32.1%. The median time to allowance is 1228 days. Interview lift is 65.6%, the largest interview-associated change shown in this profile.

The represented companies are L'Oréal, Metaqor LLC, and Corteva Agriscience. The represented firms are GREENBERG TRAURIG, LLP (BOS), CHRISTENSEN O'CONNOR JOHNSON KINDNESS PLLC, and TROUTMAN PEPPER LOCKE LLP. The gap between the overall allowance rate and interview lift makes interview preparation a significant consideration for practitioners evaluating prosecution strategy.

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

Performance Statistics

32.1%
Allow Rate
-27.9% vs TC avg
174
Total Applications
+65.6%
Interview Lift
1228
Avg Prosecution Days
Based on 112 resolved cases, 2023–2026

Rejection Statute Breakdown

2.1%
§101 Eligibility
10.4%
§102 Novelty
44.6%
§103 Obviousness
27.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18391998 POLYMERIC IMPLANTS WITH HIGH DRUG LOADING AND LONG-ACTING DRUG RELEASE AND METHODS OF MAKING THE SAME Final Rejection The University of North Carolina at Chapel Hill
18724780 METHOD FOR CONTROLLING WEEDS Non-Final OA SYNGENTA CROP PROTECTION AG
18450086 TRIPLE STABILIZER SYSTEM Final Rejection Bayer Aktiengesellschaft
18576185 PASTE-LIKE SILICONE COMPOSITION, METHOD FOR PRODUCING THE SAME, AND COSMETICS Final Rejection SHIN-ETSU CHEMICAL CO., LTD.
18199625 OZONE-BASED LOW TEMPERATURE SILICON OXIDE COATING FOR PHARMACEUTICAL APPLICATIONS Non-Final OA Applied Materials, Inc.
18036207 DELAYED RELEASE SOFTGEL CAPSULES Non-Final OA R.P. Scherer Technologies, LLC
18256526 SENSITIZER FOR IMMUNOCHROMATOGRAPHIC ASSAYS, AND ASSAY Final Rejection NOF CORPORATION
17757314 AUGMENTATION OF FIBROBLAST MEDIATED REGENERATION OF INTRAVERTEBRAL DISCS Non-Final OA FIGENE, LLC

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Frequently Asked Questions

What is examiner Edwin Coleman Mitchell's allowance rate?

32.1% of resolved applications examined by Edwin Coleman Mitchell were allowed (112 resolved cases), compared with 22.7% across Art Unit 1619 over the last five years.

Does an interview help with examiner Edwin Coleman Mitchell?

This examiner's interview lift is +65.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Edwin Coleman Mitchell take to allow a patent?

Applications allowed by Edwin Coleman Mitchell took 1,228 days on average from filing to allowance.

Which art unit does examiner Edwin Coleman Mitchell work in?

Edwin Coleman Mitchell examines applications in Art Unit 1619 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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