Prosecution Insights
Last updated: October 27, 2026

Derrick W Ferris, USPTO Patent Examiner

Listed by the USPTO as FERRIS, DERRICK W

Tech Center 2400 • Art Units: 2400 2411 2463 2478

This examiner grants 26% of resolved cases

Performance Statistics

26.5%
Allow Rate
-31.5% vs TC avg
86
Total Applications
-4.1%
Interview Lift
1402
Avg Prosecution Days
Based on 68 resolved cases, 2023–2026

Rejection Statute Breakdown

10.5%
§101 Eligibility
19.7%
§102 Novelty
53.3%
§103 Obviousness
14.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18218526 SIMULTANEOUS PHYSICAL UPLINK CONTROL CHANNEL TRANSMISSIONS OVER MULTI-PANEL Final Rejection Apple Inc.
18924498 COMMUNICATION DEVICE, COMMUNICATION METHOD, AND STORAGE MEDIUM Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18918180 DATA TRANSCEIVING METHOD AND APPARATUS Non-Final OA FUJITSU LIMITED
18000785 METHOD AND APPARATUS FOR TRANSMITTING POSITION REFERENCE SIGNAL, COMMUNICATION DEVICE AND STORAGE MEDIUM Non-Final OA Beijing Xiaomi Mobile Software Co., Ltd.
18958344 CELL HANDOVER METHOD AND APPARATUS, TERMINAL DEVICE, AND NETWORK DEVICE Non-Final OA GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
18494102 SYSTEM AND METHOD FOR CROSS TECHNOLOGY RADIO FREQUENCY INTERFERENCE MITIGATION Final Rejection GM Global Technology Operations LLC

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Frequently Asked Questions

What is examiner Derrick W Ferris's allowance rate?

26.5% of resolved applications examined by Derrick W Ferris were allowed (68 resolved cases), compared with 49.8% across Art Unit 2400 over the last five years.

Does an interview help with examiner Derrick W Ferris?

This examiner's interview lift is -4.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Derrick W Ferris take to allow a patent?

Applications allowed by Derrick W Ferris took 1,402 days on average from filing to allowance.

Which art unit does examiner Derrick W Ferris work in?

Derrick W Ferris examines applications in Art Unit 2400 in Tech Center 2400 (Networking & Security).

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