Prosecution Insights
Last updated: October 26, 2026

Gregory T Prather, USPTO Patent Examiner

Listed by the USPTO as PRATHER, GREGORY T

Tech Center 3700 • Art Units: 3615 3618 3619 3656 3658 3773

This examiner grants 69% of resolved cases

Analysis

PRATHER, GREGORY T works in Tech Center 3700 and Art Unit 3615. The profile contains 544 resolved cases, a 68.8% allowance rate, and a 1042-day median time to allowance. An interview lift of 21.5% provides a meaningful positive signal for applicants that use interviews to clarify claim scope or address outstanding issues.

The leading companies are Samsung Electronics Co., Ltd., Mitsubishi Heavy Industries Ltd., and Delta Electronics Inc. The principal firms are HAUPTMAN HAM, LLP, CKC & Partners Co., LLC, and Kilpatrick Townsend & Stockton LLP - East Coast.

Applicants should account for a prosecution path that combines a majority allowance outcome with a substantial median duration. The interview figure supports preparing a focused agenda, especially where technical explanations may help distinguish the claimed combination from the cited art.

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

Performance Statistics

68.8%
Allow Rate
-1.2% vs TC avg
563
Total Applications
+21.5%
Interview Lift
1042
Avg Prosecution Days
Based on 544 resolved cases, 2023–2026

Rejection Statute Breakdown

1.8%
§101 Eligibility
27.6%
§102 Novelty
37.0%
§103 Obviousness
31.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18522855 ROBOT BLADE Non-Final OA Samsung Electronics Co., Ltd.
19100298 Industrial Robot Non-Final OA ABB Schweiz AG
18725131 OSCILLATION DEVICE AND METHOD FOR CONTROLLING OSCILLATION DEVICE Final Rejection MITSUBISHI HEAVY INDUSTRIES MACHINERY SYSTEMS, LTD.
18868169 DRIVE DEVICE AND ROBOT EQUIPPED WITH DRIVE DEVICE Non-Final OA FANUC CORPORATION
19214637 ROTATION SHAFT STRUCTURE, TRANSMISSION SYSTEM, OPERATION MECHANISM AND SWITCHING DEVICE ASSEMBLY Non-Final OA Schneider Electric Industries SAS
18412470 TRANSMISSION AND CONNECTION STRUCTURE FOR CONNECTING INSTRUMENT DRIVE AND STERILE ADAPTER, AND SURGICAL ROBOT INCLUDING THE SAME Non-Final OA CORNERSTONE TECHNOLOGY (SHENZHEN) LIMITED

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Frequently Asked Questions

What is examiner Gregory T Prather's allowance rate?

68.8% of resolved applications examined by Gregory T Prather were allowed (544 resolved cases), compared with 79.2% across Art Unit 3615 over the last five years.

Does an interview help with examiner Gregory T Prather?

This examiner's interview lift is +21.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Gregory T Prather take to allow a patent?

Applications allowed by Gregory T Prather took 1,042 days on average from filing to allowance.

Which art unit does examiner Gregory T Prather work in?

Gregory T Prather examines applications in Art Unit 3615 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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