Prosecution Insights
Last updated: April 19, 2026

Examiner: TIETJEN, MARINA ANNETTE

Tech Center 3700 • Art Units: 3753 3799

This examiner grants 75% of resolved cases

Performance Statistics

74.9%
Allow Rate
+4.9% vs TC avg
979
Total Applications
+20.8%
Interview Lift
1020
Avg Prosecution Days
Based on 960 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
33.7%
§102 Novelty
41.9%
§103 Obviousness
22.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18515285 SOLENOID VALVE Non-Final OA HL MANDO CORPORATION
18769956 SERVICE TUBE ASSEMBLY FOR TURBINE ENGINE Non-Final OA Pratt & Whitney Canada Corp.
18872583 FUEL INJECTION VALVE Non-Final OA HITACHI ASTEMO, LTD.
18990230 ELECTROMECHANICAL CONNECTION DEVICE AND DIRECTIONAL CONTROL VALVE EQUIPPED THEREWITH Non-Final OA Festo SE & Co. KG
18875202 UNLOADING VALVE AND A GAS LIFT SYSTEM AND A METHOD OF INSTALLING SUCH A GAS LIFT SYSTEM Non-Final OA SHELL USA, INC.
18982724 TANKLESS WATER HEATER ISOLATION VALVE ASSEMBLY Non-Final OA Watts Regulator Co.
18874533 HIGH-THROUGHPUT LOAD LOCK CHAMBER Non-Final OA ASML Netherlands B.V.
18856874 LIQUEFIED PETROLEUM GAS FAUCET Non-Final OA Avishai EDRI
18771785 HEATER OPTIMIZED BALL VALVE Non-Final OA A & N Corporation
18716813 One-Way Finish Valve Suitable for Hydrogen-Energy Handheld Torch Non-Final OA BEIJING AEROSPACE PETROCHEMICAL TECHNOLOGY & EQUIPMENT ENGINEERING CORPORATION LIMITED
18714693 VALVE CONTROL APPARATUS AND METHOD Non-Final OA KOPVA LTD
18594818 3D Printed Multiport Vacuum Chamber Non-Final OA University of the Incarnate Word
18287345 VARIABLE ORIFICE ROTARY VALVE FOR CONTROLLING GAS FLOW Final Rejection ORIGIN MEDICAL DEVICES INC.

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