Prosecution Insights
Last updated: October 27, 2026

Geoffrey S Mruk, USPTO Patent Examiner

Listed by the USPTO as MRUK, GEOFFREY S

Tech Center 2800 • Art Units: 2853

This examiner grants 92% of resolved cases

Analysis

MRUK, GEOFFREY S works in Technology Center 2800 and Art Unit 2853. The profile includes 1179 resolved cases, with an allowance rate of 92.4%. The median time to allowance is 729 days, and interview lift is 3.0%. The large docket and high allowance rate provide a strong historical basis for evaluating this examiner, while the interview figure shows little measured change associated with interviews.

Canon Inc., Brother Kogyo Kabushiki Kaisha, and Kabushiki Kaisha Toshiba are the listed companies. The firms are BANNER & WITCOFF, LTD., IPUSA, P.L.L.C, and JCIPRNET. Practitioners can examine these matters for recurring claim issues and effective written responses. Given the reported interview lift, counsel may place greater emphasis on initial claim clarity and direct written prosecution, while still considering an interview when a specific technical or claim construction issue warrants discussion.

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

Performance Statistics

92.4%
Allow Rate
+24.4% vs TC avg
1,197
Total Applications
+3.0%
Interview Lift
729
Avg Prosecution Days
Based on 1179 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
19.7%
§102 Novelty
63.6%
§103 Obviousness
4.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18827603 HEAD, PRINTING APPARATUS, AND HEAD CONTROLLER Non-Final OA Brother Kogyo Kabushiki Kaisha
18609141 LIQUID DISCHARGING SYSTEM Final Rejection BROTHER KOGYO KABUSHIKI KAISHA
19021158 LIQUID DROPLET JETTING APPARATUS AND MANUFACTURING METHOD OF PRINTED ARTICLE Non-Final OA FUJIFILM Corporation
19018151 LIQUID STORAGE CONTAINER Non-Final OA CANON KABUSHIKI KAISHA
18989263 LIQUID EJECTION HEAD SUBSTRATE Non-Final OA CANON KABUSHIKI KAISHA
19046455 PRINTER, METHOD, AND STORAGE MEDIUM Non-Final OA Toshiba Tec Kabushiki Kaisha
19057524 FLOW PATH CONNECTION MECHANISM AND INKJET RECORDING APPARATUS Non-Final OA KYOCERA Document Solutions Inc.
18806863 HEATER DEVICE WITH MEMORY UNIT AND OPERATION METHOD THEREOF Non-Final OA InnoLux Corporation

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Frequently Asked Questions

What is examiner Geoffrey S Mruk's allowance rate?

92.4% of resolved applications examined by Geoffrey S Mruk were allowed (1,179 resolved cases), compared with 72.7% across Art Unit 2853 over the last five years.

Does an interview help with examiner Geoffrey S Mruk?

This examiner's interview lift is +3.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Geoffrey S Mruk take to allow a patent?

Applications allowed by Geoffrey S Mruk took 729 days on average from filing to allowance.

Which art unit does examiner Geoffrey S Mruk work in?

Geoffrey S Mruk examines applications in Art Unit 2853 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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