Prosecution Insights
Last updated: April 19, 2026

Examiner: YAO, THEODORE N

Tech Center 3600 • Art Units: 3676

This examiner grants 68% of resolved cases

Performance Statistics

67.6%
Allow Rate
+15.6% vs TC avg
328
Total Applications
+36.9%
Interview Lift
1094
Avg Prosecution Days
Based on 278 resolved cases, 2023–2026

Rejection Statute Breakdown

0.8%
§101 Eligibility
21.1%
§102 Novelty
43.3%
§103 Obviousness
30.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17936763 MULTI-SIZE FINS WIPER PLUG Final Rejection SAUDI ARABIAN OIL COMPANY
19233124 HEATERS TO ACCELERATE SETTING OF EXPANDABLE METAL Non-Final OA Halliburton Energy Services, Inc.
19232491 VOLTAGE TO ACCELERATE/DECELERATE EXPANDABLE METAL Non-Final OA Halliburton Energy Services, Inc.
18350367 FLUID MULTISAMPLE CAPTURING WITH TRANSLATING MEMBER Non-Final OA Halliburton Energy Services, Inc.
17118472 METHOD FOR HIGH-PRESSURE ACCESS THROUGH A MULTILATERAL JUNCTION Non-Final OA Halliburton Energy Services, Inc.
16455177 CASING CONVEYED, EXTERNALLY MOUNTED PERFORATION CONCEPT Non-Final OA Halliburton Energy Services, Inc.
19123411 METHOD OF WELL DECOMMISSIONING IN THROUGH-TUBING APPLICATIONS Final Rejection Schlumberger Technology Corporation
19229717 DOWNHOLE TOOL HAVING CONE SUPPORTED INSERTS WITH SERIAL WIDE TEETH Non-Final OA PHOENIX OIL TOOLS INTERNATIONAL, LLC
18483728 WORK TOOL ASSEMBLY HAVING TIP ADAPTER AND ANTI-BENDING STABILIZER FOR SAME Non-Final OA Caterpillar Inc.
18467861 Electric Work Machine Tool Quick Coupler Retention Device Final Rejection Caterpillar Inc.
18303987 RESETTABLE BACKUP AND SYSTEM Final Rejection Baker Hughes Oilfield Operations LLC
19004700 METHOD OF INJECTING WATER INTO RESERVOIRS WITH GEOMECHANICAL STIMULATION BY PRESSURE PULSE Non-Final OA PETRÓLEO BRASILEIRO S.A. – PETROBRAS
19104643 DEBRIS SEPARATOR Non-Final OA SANDBOX ENTERPRISES, LLC
18478102 VIBRATION DRIVE TRAIN FOR MAKING A SCREED BODY OF A SCREED DEVICE OF A PAVER VIBRATE, A SCREED BODY, A SCREED DEVICE AND A PAVER Non-Final OA VOLVO CONSTRUCTION EQUIPMENT AB
18859921 Surge Pressure Reduction Apparatus with Convertible Diverter Device and Integrity Verification Device Non-Final OA Trenergy Investments, LLC
18530973 HORIZONTAL DIRECTIONAL DRILLING RIG Final Rejection LaValley Industries, LLC
18562686 STRUCTURAL SURFACE ENHANCING PANEL Non-Final OA FAUN TRACKWAY LIMITED
18485474 METHOD FOR BRAKING A COMPACTION MACHINE, AND COMPACTION MACHINE Non-Final OA BOMAG GMBH
18484864 LIGHTWEIGHT BRIDGE STRUCTURE AND STRUCTURAL JOINT DESIGN Non-Final OA The Henry Group
18451204 CROSSING GATE MECHANISM WITH PROGRAMMABLE ELECTRONIC SWITCHING DEVICES Non-Final OA Siemens Mobility, Inc.
18276938 VOID FORMING MODULE, METHOD OF PREPARING A STRUCTURE AND USE OF SUCH MODULE IN THE PREPARATION OF A STRUCTURE Non-Final OA WATER PRODUCTS LIMITED
18226871 Apparatus and system for surface processing of plastically deformable masses Non-Final OA PLANUM Int. AG
18132690 AUTONOMOUS SNOW BLOWER WITH SNOW MEASURING UNIT Non-Final OA NIVOSO, INC.
18125522 Chemical Bypass for a Packer in a Wellstring Non-Final OA WellWorx Energy Solutions LLC
18078669 Height Adjuster for Glass Assembly Final Rejection TCO AS
18078695 Plug Assembly with Sloped Walls Non-Final OA TCO AS
17768417 APPARATUS FOR DRILLING AND POSITIONING A COLLAR SUPPORT SLEEVE INTO A BLAST HOLE Final Rejection AQUIRIAN TECHNOLOGY PTY LTD
17431242 SYSTEM AND METHOD FOR HANDLING DRILL RODS Non-Final OA TITELINE SERVICES PTY LTD

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