Prosecution Insights
Last updated: April 19, 2026

Examiner: HALL, KRISTYN A

Tech Center 3600 • Art Units: 3672

This examiner grants 82% of resolved cases

Performance Statistics

81.8%
Allow Rate
+29.8% vs TC avg
764
Total Applications
-6.6%
Interview Lift
870
Avg Prosecution Days
Based on 743 resolved cases, 2023–2026

Rejection Statute Breakdown

3.3%
§101 Eligibility
23.3%
§102 Novelty
41.1%
§103 Obviousness
25.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19482661 DOWNHOLE FLUID SEPARATION FOR DRILLING A WELL IN A HOT SUBTERRANEAN ZONE Non-Final OA Eavor Technologies Inc.
19278243 METHOD FOR IMPROVING WELL INTEGRITY MANAGEMENT FOR GAS LIFT OIL WELLS Non-Final OA Saudi Arabian Oil Company
19205002 TWO-PART DRILLING AND RUNNING TOOL Non-Final OA Halliburton Energy Services, Inc.
19016851 FORMATION ELASTIC PROPERTY EVALUATION USING DRILLING DATA BASED ON A BIT-ROCK INTERACTION MODEL Final Rejection Halliburton Energy Services, Inc.
19277150 PENETRATOR SYSTEM FOR ELECTRICAL SUBMERSIBLE PUMPS Non-Final OA Sonic Connectors Ltd.
18775275 SEMI-AUTOMATIC DIRECTIONAL DRILL AND METHOD Non-Final OA TT Technologies, Inc.
18965908 COMPUTER IMPLEMENTED METHOD FOR REAL-TIME LWD PROFILE PREDICTION IN THE INTERVALS FROM THE DRILL TIP TO THE LIMIT OF THE DEPTH PROFILE OFFSETS Non-Final OA PETRÓLEO BRASILEIRO S.A. - PETROBRAS
18977309 APPARATUS AND METHODS FOR UNINTERRUPTED DRILLING Non-Final OA MOTIVE DRILLING TECHNOLOGIES, INC.
18994175 Method for Determining Geology While Drilling Final Rejection Royal Eijkelkamp B.V.
19008116 DRILLING MACHINE ATTACHMENT FOR LOADER Non-Final OA The Charles Machine Works, Inc.
18919024 RCD HOUSING AND COUPLING METHOD Non-Final OA Hydril USA Distribution LLC

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