Prosecution Insights
Last updated: October 26, 2026

An H Do, USPTO Patent Examiner

Listed by the USPTO as DO, AN H

Tech Center 4100 • Art Units: 1687 2853 2855 2857 3792 4100

This examiner grants 90% of resolved cases

Analysis

DO, AN H is assigned to Tech Center 4100 and Art Unit 1687. The profile records 1470 resolved cases, an allowance rate of 90.4%, and a median of 770 days to allowance. The 7.2% interview lift indicates that interviews are associated with a modest improvement in allowance outcomes.

Representative companies include Robert Bosch GmbH, Intel Corporation, and Siemens Healthineers AG. The listed firms are BALLARD SPAHR LLP, BLANK ROME LLP, and Buchanan Ingersoll & Rooney PC. The substantial case volume and high allowance rate provide a strong basis for prosecution planning, while the median timing offers a useful expectation for allowance pace.

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

Performance Statistics

90.4%
Allow Rate
+30.4% vs TC avg
1,492
Total Applications
+7.2%
Interview Lift
770
Avg Prosecution Days
Based on 1470 resolved cases, 2023–2026

Rejection Statute Breakdown

10.6%
§101 Eligibility
40.5%
§102 Novelty
25.9%
§103 Obviousness
4.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18688817 METHOD FOR PREVENTING DAMAGE TO A FUEL CELL STACK Non-Final OA Robert Bosch GmbH
18343763 ALGORITHM FOR ASSESSMENT OF FORWARD BIASED JUNCTIONS DETECTED DURING CIRCUIT OPERATION Non-Final OA Intel Corporation
18640273 Device and Method for Foodstuff Quality Control Non-Final OA Siemens Healthineers AG
18646523 CHEMICAL SEARCH QUERY USING VECTOR DATABASE Non-Final OA Microsoft Technology Licensing, LLC
18718463 FRAGRANCE RECIPE/COMPOSITION FROM TARGET TEMPORAL ODOUR PROFILES Non-Final OA BASF SE
18614950 Method for monitoring the wear of a motor vehicle tire and tire pressure monitoring module for implementing said method Final Rejection Continental Automotive Technologies GmbH
18074364 EVALUATION OF BRAIN TISSUE AND MATERIAL BASED ON A FRACTION-PRODUCT AND OPTICAL SPECTROSCOPY Non-Final OA United States Government as Represented by the Department of Veterans Affairs

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Frequently Asked Questions

What is examiner An H Do's allowance rate?

90.4% of resolved applications examined by An H Do were allowed (1,470 resolved cases), compared with 44.0% across Art Unit 1687 over the last five years.

Does an interview help with examiner An H Do?

This examiner's interview lift is +7.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner An H Do take to allow a patent?

Applications allowed by An H Do took 770 days on average from filing to allowance.

Which art unit does examiner An H Do work in?

An H Do examines applications in Art Unit 1687 in Tech Center 4100.

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