Prosecution Insights
Last updated: October 02, 2026

Examiner: VO, ANH T N

Tech Center 2800 • Art Units: 2681 2853 2861

This examiner grants 90% of resolved cases

Analysis

Anh T. N. Vo is an examiner in Art Unit 2681 within Tech Center 2800. The examiner has a record of 1521 resolved cases. The data shows an allowance rate of 90.0% for these applications. This 90.0% rate provides a baseline for applicants to evaluate the probability of success when their cases are assigned to this examiner. The 1521 resolved cases indicate a very extensive history of examination within this technical area.

The median days to allowance for successful cases is 736. This 736-day figure represents the typical timeline for the prosecution process from filing to grant. An important metric in this profile is the 4.6% interview lift. This 4.6% lift shows that the likelihood of an allowance increases slightly when an interview is conducted with the examiner. Practitioners should note that the 4.6% lift is small compared to the 90.0% base allowance rate, suggesting that the written record is the primary driver of success. The 736-day median pendency and the 90.0% allowance rate are key factors for strategic planning. By leveraging the 4.6% interview lift, applicants may resolve minor issues in the prosecution process.

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
1,526
Total Applications
+4.6%
Interview Lift
736
Avg Prosecution Days
Based on 1521 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
44.7%
§102 Novelty
43.0%
§103 Obviousness
5.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
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
19051444 BOARD, LIQUID ACCOMMODATION CONTAINER, AND PRINTING SYSTEM Non-Final OA SEIKO EPSON CORPORATION
18990475 PRINTING DEVICE AND METHOD FOR CONTROLLING PRINTING DEVICE Non-Final OA SEIKO EPSON CORPORATION
19035725 PRINTER Non-Final OA Toshiba Tec Kabushiki Kaisha
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
19201249 PRINTING MATERIAL APPLYING APPARATUS Non-Final OA CANON KABUSHIKI KAISHA
19052600 LIQUID EJECTION HEAD Non-Final OA CANON KABUSHIKI KAISHA
19049735 LIQUID EJECTION HEAD, LIQUID EJECTION APPARATUS, AND METHOD OF SUPPLYING LIQUID Non-Final OA CANON KABUSHIKI KAISHA
18949034 IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM Non-Final OA CANON KABUSHIKI KAISHA
18473052 LIQUID CONTAINER AND PRINTING APPARATUS Non-Final OA CANON KABUSHIKI KAISHA
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.

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