Prosecution Insights
Last updated: May 29, 2026

Examiner: NGUYEN, HUNG Q

Tech Center 3700 • Art Units: 1732 3741 3747 3783 3799

This examiner grants 84% of resolved cases

Performance Statistics

83.6%
Allow Rate
+13.6% vs TC avg
606
Total Applications
+12.5%
Interview Lift
857
Avg Prosecution Days
Based on 590 resolved cases, 2023–2026

Rejection Statute Breakdown

0.4%
§101 Eligibility
18.6%
§102 Novelty
55.6%
§103 Obviousness
11.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18373396 DUAL FUEL SYSTEM FOR ENGINE HAVING FUEL-ACTUATED FUEL PUMP AND METHOD Non-Final OA Caterpillar Inc.
19101405 PISTON ASSEMBLIES AND CYLINDERS THAT CONTROL GAS FLOW Non-Final OA Cummins Inc.
18995426 PRECHAMBER SPARK PLUG Non-Final OA Robert Bosch GmbH
18875853 METHOD AND DEVICE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE Non-Final OA Robert Bosch GmbH
18484105 BI-FUEL RECIPROCATING ENGINE TO POWER DIRECT DRIVE TURBINE FRACTURING PUMPS ONBOARD AUXILIARY SYSTEMS AND RELATED METHODS Non-Final OA BJ Energy Solutions, LLC
18883213 Control Method of Valve Opening and Closing Non-Final OA Kia Corporation
18084553 COOLING SYSTEM Non-Final OA MAHLE International GmbH
18869778 CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE, INTERNAL COMBUSTION ENGINE CONFIGURED TO CONTROL COMBUSION, AND METHOD OF CONTROL THEREOF Final Rejection Cummins Power Generation Inc.
18727688 PISTON FOR DIESEL ENGINES WITH OPTIMIZED COMBUSTION CHAMBER Final Rejection Dumarey Automotive Italia S.p.A.
18981852 FUEL INJECTOR OF AN INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE Non-Final OA MAN Energy Solutions SE
18868694 APPARATUS AND METHOD FOR MANAGING AUTOIGNITION IN AN IN-CYLINDER INJECTOR AND COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE Non-Final OA HPDI Technology Limited Partnership

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