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Last updated: August 17, 2026

Examiner: ANDREWS, DAVID L

Tech Center 3600 • Art Units: 3641 3672 3676

This examiner grants 72% of resolved cases

Performance Statistics

71.6%

Allow Rate

+19.6% vs TC avg

1,003

Total Applications

+16.2%

Interview Lift

1027

Avg Prosecution Days

Based on 979 resolved cases, 2023–2026

Rejection Statute Breakdown

1.1%

§101 Eligibility

23.4%

§102 Novelty

42.7%

§103 Obviousness

22.8%

§112 Clarity

Currently Pending Office Actions

App #	Title	Status	Assignee
19280684	DOWNHOLE TOOLS AND SYSTEMS AND RELATED METHODS OF USE	Non-Final OA	The WellBoss Company, LLC
19317582	A DOWNHOLE TOOL EMPLOYING A PRESSURE INTENSIFIER	Non-Final OA	Halliburton Energy Services, Inc.
19286667	INTERNAL SLIP INCLUDING ONE OR MORE SYMMETRICAL TEETH	Final Rejection	Halliburton Energy Services, Inc.
19239373	ELECTRICALLY OPERATED LOW POWER COMPLETION CONTROL SYSTEM	Non-Final OA	Halliburton Energy Services, Inc.
19062310	SAFETY VALVE EMPLOYING A MECHANICAL CONNECTING APPARATUS HAVING ONE OR MORE MAGNETIC TARGETS	Final Rejection	Halliburton Energy Services, Inc.
18959063	MAGNETICALLY COUPLED SUBSURFACE SAFETY VALVE	Final Rejection	Halliburton Energy Services, Inc.
18494395	SEALING ASSEMBLY EMPLOYING A CYLINDRICAL EXTRUSION LIMITER	Final Rejection	Halliburton Energy Services, Inc.
19173236	Collecting Device with an Adjustable Filter Position and Method for Use	Non-Final OA	Baker Hughes Oilfield Operations, LLC

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