Prosecution Insights
Last updated: October 02, 2026

Examiner: DUFFIELD, JEREMY S

Tech Center 2400 • Art Units: 2424 2427 2498

This examiner grants 49% of resolved cases

Analysis

Jeremy S. Duffield works in Art Unit 2424 within Tech Center 2400. The examiner has 450 resolved cases and an allowance rate of 49.3%. This rate indicates a challenging environment for patent applicants. The median days to allowance is 1364, providing a timeline for successful prosecution.

The interview lift is 52.6%, suggesting that interviews are an effective way to increase the chances of allowance relative to the 49.3% baseline. Practitioners should strongly consider an interview to take advantage of the 52.6% lift. The 450 resolved cases offer a robust data set.

In Tech Center 2400, the 49.3% allowance rate and 1364-day median timeline offer a strategic path for applicants in Art Unit 2424. Utilizing the 52.6% interview lift can significantly improve outcomes. These data points are essential for informed decision-making.

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

Performance Statistics

49.3%
Allow Rate
-8.7% vs TC avg
473
Total Applications
+52.6%
Interview Lift
1364
Avg Prosecution Days
Based on 450 resolved cases, 2023–2026

Rejection Statute Breakdown

7.8%
§101 Eligibility
9.1%
§102 Novelty
62.3%
§103 Obviousness
14.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18541961 Silicon Key Exchange Non-Final OA Apple Inc.
18703523 AUTHENTICATION APPARATUS, MOBILE TERMINAL, AND AUTHENTICATION METHOD Non-Final OA NEC Corporation
18521631 DRIVE VIDEO RECORD SYSTEM AND METHOD OF CONTROLLING THE SAME Final Rejection Kia Corporation
18879881 METHODS AND DEVICES FOR SUPPORTING AUTHENTICATION Final Rejection Telefonaktiebolaget LM Ericsson (publ)
18609968 METHOD AND APPARATUS TO DELIVER MULTIPLE NAS CONTAINERS VIA A SINGLE ACCESS STRATUM MESSAGE Final Rejection Nokia Technologies Oy
18772902 System for Calculating Trust of Client Session(s) Non-Final OA Microsoft Technology Licensing, LLC
18358663 Monitoring and Activity Reporting of Enhanced Media Content Non-Final OA Comcast Cable Communications, LLC
18842026 METHOD, APPARATUS, AND ELECTRONIC DEVICE FOR INTERACTIVE PUBLICATION OF AN INTERFACE BASED ON A PERMISSION Final Rejection Beijing Youzhuju Network Technology Co., Ltd.
17940299 PROXIMITY-AWARE MULTIFACTOR AUTHENTICATION FOR CONTINUOUS TRUSTED ACCESS Final Rejection Cisco Technology, Inc.
18602151 PASSWORD DONGLE FOR GENERATION AND RETRIEVAL OF SECURE PASSWORDS Final Rejection Microchip Technology Incorporated
18930052 SHARING OF DIGITAL KEYS AND PERMISSIONS AMONG REAL-WORLD DEVICES Final Rejection Dell Products L.P.
18425220 MANAGING SYSTEM DATA USING OUT-OF-BAND METHODS Final Rejection Dell Products L.P.

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