Prosecution Insights
Last updated: April 19, 2026

Examiner: SUE-AKO, ANDREW B.

Tech Center 3600 • Art Units: 3674 3676

This examiner grants 71% of resolved cases

Performance Statistics

71.2%
Allow Rate
+19.2% vs TC avg
745
Total Applications
+27.4%
Interview Lift
769
Avg Prosecution Days
Based on 722 resolved cases, 2023–2026

Rejection Statute Breakdown

1.2%
§101 Eligibility
21.0%
§102 Novelty
41.2%
§103 Obviousness
24.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19479782 METHODS AND SYSTEMS FOR OPTIMIZING THE STORAGE OF CARBON IN SUBTERRANEAN MAFIC AND ULTRAMAFIC ROCK FORMATIONS Non-Final OA Chevron U.S.A. Inc.
19243546 Manufacturing Micro-proppant Onsite Non-Final OA Chevron U.S.A. Inc.
19272087 PROVIDING LOST CIRCULATION MATERIAL TO CURE FLUID LOSSES IN A WELL Non-Final OA Saudi Arabian Oil Company
19210415 NON-REACTIVE COLLOID PARTICLES TO STOP GAS MIGRATION IN EXPANDABLE METAL APPLICATIONS Non-Final OA Halliburton Energy Services, Inc.
19252483 CONTROLLING FRACTURE GROWTH DURING STIMULATION OF SUBSURFACE RESERVOIRS USING OFFSET WELLS Non-Final OA Fervo Energy Company
18638376 DRILLING FLUIDS AND METHODS RELATED THERETO Non-Final OA ExxonMobil Technology and Engineering Company
18680511 CLAY SWELLING INHIBITOR COMPOSITIONS AND METHODS OF USING SAME Non-Final OA University of Louisiana at Lafayette
18923257 Method for Generating Self-Propped Hydraulic Fractures Final Rejection Quidnet Energy Inc.
18909730 Extended- and Multimodal-Release Compositions Final Rejection Finoric, LLC
19197054 METHOD OF IMPROVING INJECTION PRESSURE AND ASPHALTENE REMEDIATION Non-Final OA Baker Hughes Oilfield Operations LLC
19097454 SELF-INVERTIBLE POLYMERIC WATER-IN-OIL EMULSION AND ITS USE AS FRICTION REDUCERS Non-Final OA Sterling Specialty Chemicals Holding UK Limited
18804760 INVERTING PACKAGES, EMULSIONS, AND METHODS Final Rejection Sterling Specialty Chemicals Holding UK Limited
18984195 SELF-DEGRADING ORGANOGELS Non-Final OA BP Exploration Operating Company Limited
18938602 APPARATUS AND PROCESS FOR FRACTURE CONDUCTIVITY TUNING Non-Final OA The Penn State Research Foundation

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