Prosecution Insights
Last updated: October 27, 2026

Wai-Ga David Ho, USPTO Patent Examiner

Listed by the USPTO as HO, WAI-GA DAVID

Tech Center 3700 • Art Units: 2872 3645 3771

This examiner grants 10% of resolved cases

Analysis

HO, WAI-GA DAVID has resolved 10 cases in tech center 3700 and art unit 2872. The allowance rate is 10.0%, while interview lift is 100.0%. The figures indicate a limited allowance record alongside a strong positive interview association, but the small docket requires caution before drawing broad conclusions.

The median time to allowance is 1270 days. Applicants may consider early examiner engagement while planning for extended prosecution. The recurring companies are E Ink Holdings Inc., Hoya Corporation, and Samsung Electronics Co., Ltd. The recurring firms are OLIFF PLC, DeWitt LLP (Minneapolis), and NORTON ROSE FULBRIGHT US LLP. These participants provide the available context for practice in this docket.

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

Performance Statistics

10.0%
Allow Rate
-60.0% vs TC avg
63
Total Applications
+100.0%
Interview Lift
1270
Avg Prosecution Days
Based on 10 resolved cases, 2023–2026

Rejection Statute Breakdown

0.4%
§101 Eligibility
15.4%
§102 Novelty
52.1%
§103 Obviousness
32.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18105606 WEARABLE ELECTRONIC DEVICE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
17836903 LENS MOUNT AND LENS APPARATUS HAVING THE SAME Final Rejection CANON KABUSHIKI KAISHA
18558421 OPTICAL SYSTEMS WITH LIGHT CONTROL FILMS Final Rejection 3M INNOVATIVE PROPERTIES COMPANY
17896980 CONTACT SLEEVE, CAMERA OBJECTIVE WITH CONTACT SLEEVE, USE OF A CONTACT SLEEVE Non-Final OA Robert Bosch GmbH
17794538 LENS GROUP, CAMERA MODULE, AND TERMINAL DEVICE Non-Final OA HUAWEI TECHNOLOGIES CO., LTD.
18560873 CAMERA MODULE AND VEHICLE COMPRISING SAME Final Rejection LG INNOTEK CO., LTD.
18704513 SYSTEMS AND METHODS FOR DEFLECTING OPTICAL BEAMS BY TRANSLATING METASURFACES Final Rejection CORNING INCORPORATED
18046818 METHOD FOR DETECTING AN ACTIVITY OF EYES OF A USER OF GLASSES Final Rejection STMicroelectronics S.r.I.
17694985 LENS ASSEMBLY DEVICE Non-Final OA SAMSUNG ELECTRO-MECHANICS CO., LTD.
18696845 MEASURING APPARATUS AND MEASURING METHOD FOR PREPARING LASER TREATMENT, AND LASER TREATMENT APPARATUS Final Rejection Carl Zeiss Meditec AG
17786790 OPHTHALMIC DEVICE HAVING ADJUSTABLE FILTERING PROPERTIES Final Rejection Essilor International
18837757 OPHTHALMIC LENS, DESIGN METHOD OF THE SAME, MANUFACTURING METHOD OF THE SAME, AND OPHTHALMIC LENS SET Non-Final OA HOYA CORPORATION
18520627 OPTICAL ELEMENT DRIVING APPARATUS, CAMERA MODULE AND CAMERA-EQUIPPED APPARATUS Final Rejection MITSUMI ELECTRIC CO., LTD.

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Frequently Asked Questions

What is examiner Wai-Ga David Ho's allowance rate?

10.0% of resolved applications examined by Wai-Ga David Ho were allowed (10 resolved cases), compared with 64.9% across Art Unit 2872 over the last five years.

Does an interview help with examiner Wai-Ga David Ho?

This examiner's interview lift is +100.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Wai-Ga David Ho take to allow a patent?

Applications allowed by Wai-Ga David Ho took 1,270 days on average from filing to allowance.

Which art unit does examiner Wai-Ga David Ho work in?

Wai-Ga David Ho examines applications in Art Unit 2872 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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