Prosecution Insights
Last updated: October 26, 2026

Grant David Hay, USPTO Patent Examiner

Listed by the USPTO as HAY, GRANT DAVID

Tech Center 4100 • Art Units: 3723 4100

This examiner grants 0% of resolved cases

Analysis

HAY, GRANT DAVID works in tech center 4100 and art unit 3723. The profile contains 1 resolved case, with an allowance rate of 0.0%, an interview lift of 0.0%, and a median of 1019 days to allowance. The single resolved case did not reach allowance, and interviews show no measured lift.

The leading companies are Samsung Electronics Co., Ltd., RTX Corporation, and Ebara Corporation. The listed firms are Chrisman Gallo Tochtrop LLC, BakerHostetler, and BCF LLP (Misc.). Because the record is limited to one resolved case, practitioners should treat these figures as preliminary and focus on the application-specific examination record.

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

Performance Statistics

0.0%
Allow Rate
-60.0% vs TC avg
31
Total Applications
+0.0%
Interview Lift
1019
Avg Prosecution Days
Based on 1 resolved cases, 2023–2026

Rejection Statute Breakdown

1.3%
§101 Eligibility
21.3%
§102 Novelty
45.3%
§103 Obviousness
25.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18821480 NOZZLE OF CLEANER Non-Final OA LG ELECTRONICS INC.
18937275 CHEMICAL MECHANICAL POLISHING APPARATUS Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18808876 CARRIER HEAD AND SUBSTRATE POLISHING APPARATUS INCLUDING THE SAME Non-Final OA Samsung Electronics Co., Ltd.
18619536 ASSEMBLY JIGS AND METHODS OF INSTALLING DOORS TO AN AIRCRAFT Final Rejection Airbus Operations Limited
18993632 FAIRED WINDSCREEN WIPER BLADE Non-Final OA VALEO SYSTEMES D'ESSUYAGE
18619378 SEMICONDUCTOR MANUFACTURING APPARATUS Final Rejection Mitsubishi Electric Corporation
18644934 PHYSICS-BASED PROCESS CONTROL METHOD AND SYSTEM Final Rejection RTX Corporation
18644846 PROCESS CONTROL METHOD AND APPARATUS Non-Final OA RTX Corporation
18842680 SUBSTRATE POLISHING METHOD Non-Final OA EBARA CORPORATION
18854171 FIXING SYSTEM Non-Final OA TECHNOLOGIES CGC INC.

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Frequently Asked Questions

What is examiner Grant David Hay's allowance rate?

0.0% of resolved applications examined by Grant David Hay were allowed (1 resolved cases), compared with 56.5% across Art Unit 3723 over the last five years.

Does an interview help with examiner Grant David Hay?

This examiner's interview lift is +0.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Grant David Hay take to allow a patent?

Applications allowed by Grant David Hay took 1,019 days on average from filing to allowance.

Which art unit does examiner Grant David Hay work in?

Grant David Hay examines applications in Art Unit 3723 in Tech Center 4100.

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