Prosecution Insights
Last updated: October 27, 2026

Anh T N Vo, USPTO Patent Examiner

Listed by the USPTO as VO, ANH T N

Tech Center 2800 • Art Units: 2681 2853 2861

This examiner grants 90% of resolved cases

Analysis

VO, ANH T N works in tech center 2800 and art unit 2681. The record covers 1526 resolved cases, with an allowance rate of 90.0% and a median of 736 days to allowance. The interview lift is 4.6%, indicating a modest positive association between interviews and allowance outcomes.

The principal company clients are Canon Inc., Seiko Epson Corporation, and Brother Kogyo Kabushiki Kaisha. The leading firms are Venable LLP, WORKMAN NYDEGGER, and MERCHANT & GOULD P.C. The large resolved-case record supports using the allowance and timing measures as meaningful prosecution context, while the interview figure suggests that interviews may provide incremental rather than central value in individual matters.

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

Performance Statistics

90.0%
Allow Rate
+22.0% vs TC avg
1,542
Total Applications
+4.6%
Interview Lift
736
Avg Prosecution Days
Based on 1526 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
44.8%
§102 Novelty
43.1%
§103 Obviousness
5.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19419391 INK CONTAINER, INK CONTAINER SET AND PRINTING SYSTEM Final Rejection BROTHER KOGYO KABUSHIKI KAISHA
18930356 TANK HAVING OUTLET POSITIONED IN PROTRUDING CHAMBER BELOW LIQUID STORAGE CHAMBER, AND LIQUID-CONSUMING DEVICE INCLUDING THE SAME Final Rejection BROTHER KOGYO KABUSHIKI KAISHA
19212583 INK BOTTLE AND INK REPLENISHMENT SYSTEM Non-Final OA CANON KABUSHIKI KAISHA
19201249 PRINTING MATERIAL APPLYING APPARATUS Non-Final OA CANON KABUSHIKI KAISHA
19049735 LIQUID EJECTION HEAD, LIQUID EJECTION APPARATUS, AND METHOD OF SUPPLYING LIQUID Non-Final OA CANON KABUSHIKI KAISHA
19089932 PRINTING APPARATUS Non-Final OA SEIKO EPSON CORPORATION
19084114 SUPPLY UNIT, LIQUID DISCHARGE DEVICE, AND LIQUID CONTAINER Non-Final OA SEIKO EPSON CORPORATION
19062326 FILTER UNIT, LIQUID FLOW DEVICE, AND LIQUID EJECTION APPARATUS Non-Final OA SEIKO EPSON CORPORATION
18731920 OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME Final Rejection KYOCERA Document Solutions Inc.
18994962 USAGE CONTROL FOR CONSUMABLES OF A PRINT APPARATUS Non-Final OA HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
19128580 LIQUID DISCHARGE APPARATUS AND LIQUID DISCHARGE METHOD Non-Final OA RICOH COMPANY, LTD.

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Frequently Asked Questions

What is examiner Anh T N Vo's allowance rate?

90.0% of resolved applications examined by Anh T N Vo were allowed (1,526 resolved cases), compared with 85.6% across Art Unit 2681 over the last five years.

Does an interview help with examiner Anh T N Vo?

This examiner's interview lift is +4.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Anh T N Vo take to allow a patent?

Applications allowed by Anh T N Vo took 736 days on average from filing to allowance.

Which art unit does examiner Anh T N Vo work in?

Anh T N Vo examines applications in Art Unit 2681 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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