Prosecution Insights
Last updated: April 19, 2026

Examiner: GRAY, GEORGE STERLING

Tech Center 3600 • Art Units: 3676

This examiner grants 76% of resolved cases

Performance Statistics

75.5%
Allow Rate
+23.5% vs TC avg
665
Total Applications
+8.8%
Interview Lift
1020
Avg Prosecution Days
Based on 648 resolved cases, 2023–2026

Rejection Statute Breakdown

1.2%
§101 Eligibility
20.6%
§102 Novelty
41.7%
§103 Obviousness
30.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19477954 CONTROL SYSTEM FOR HORIZONTAL DIRECTIONAL DRILL Non-Final OA Vermeer Manufacturing Company
18631121 GASEOUS HYDROCARBON FORMATION HEATING DEVICE Final Rejection KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
19334421 PLUNGER LIFT WITH AN ADJUSTABLE AND VARIABLE CLUTCH Non-Final OA Endurance Lift Solutions, LLC
18739681 SYSTEM AND METHODS FOR IN-SITU PERMEABILITY MEASUREMENTS Final Rejection SAUDI ARABIAN OIL COMPANY
18616926 SUBSURFACE SAFETY VALVE INCLUDING AN ELECTROMAGNET AND AXIAL BRAKE Final Rejection Halliburton Energy Services, Inc.
19113924 ACTUATION ASSEMBLY FOR AN ISOLATION VALVE Non-Final OA SCHLUMBERGER TECHNOLOGY CORPORATION
19178604 ACTIVELY CONTROLLED BAILER Non-Final OA Equinor Energy AS
18834844 HYDRAULIC SYSTEM AND METHOD FOR DOWNHOLE SLEEVE HORIZON SELECTION AND OPENING CONTROL Non-Final OA BEIJING RESEARCH CENTER OF CNOOC (CHINA) CO., LTD.
18748343 DART AND CLUTCH ASSEMBLY Final Rejection Epic Lift Systems
18483232 MANIFOLD IMPLEMENTED IN MULTI-CHANNEL SYSTEM FOR CONTROLLING FLOW OF FLUIDS IN OIL WELL Final Rejection Controlled Fluids, Inc.
18027086 GEOTHERMAL HEAT EXCHANGE APPARATUS Non-Final OA CERAPHI ENERGY LIMITED

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