Prosecution Insights
Last updated: April 19, 2026

Examiner: PATEL, VISHAL A

Tech Center 3600 • Art Units: 3674 3675 3676

This examiner grants 59% of resolved cases

Performance Statistics

58.9%
Allow Rate
+6.9% vs TC avg
867
Total Applications
+21.7%
Interview Lift
1135
Avg Prosecution Days
Based on 820 resolved cases, 2023–2026

Rejection Statute Breakdown

0.1%
§101 Eligibility
33.0%
§102 Novelty
36.8%
§103 Obviousness
25.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19073697 BUFFER COMPONENT FOR ROOM TEMPERATURE VULCANIZING SEALANT Non-Final OA Steering Solutions IP Holding Corporation
18981425 PISTON RING ASSEMBLY Final Rejection MAHLE International GmbH
18745965 PISTON RING Final Rejection MAHLE International GmbH
18682929 PISTON RING Non-Final OA NTN CORPORATION
18710795 SLIDING ELEMENT Final Rejection EAGLE INDUSTRY CO., LTD.
18280921 SHAFT SEALING DEVICE Non-Final OA EAGLE INDUSTRY CO., LTD.
19235744 SEALING STRUCTURE Non-Final OA AKTIEBOLAGET SKF
19058443 RADIAL SHAFT SEALING RING Non-Final OA AKTIEBOLAGET SKF
19193493 BI-DIRECTIONAL COMPRESSION LOADED MECHANICAL PACKING SEALING ASSEMBLY Non-Final OA A.W. CHESTERTON COMPANY
19173426 PRESSURE BALANCED SELF-REGULATING MECHANICAL PACKING SEALING ASSEMBLY Non-Final OA A.W. CHESTERTON COMPANY
18510255 Fasteners and Geometry for Casting Attachment Non-Final OA Illinois Tool Works Inc.
19218880 PACKING ASSEMBLY WITH THREADED SLEEVE FOR INTERACTION WITH AN INSTALLATION TOOL Non-Final OA Vulcan Industrial Holdings, LLC
19123293 ELECTRICALLY CONDUCTIVE SEALING DEVICE Non-Final OA NOK CORPORATION
17433746 SEALING DEVICE Non-Final OA NOK CORPORATION
18923589 HYDRAULIC CYLINDER BUFFER SEAL BACKUP RING Final Rejection CATERPILLAR INC.
18423526 COATED WEAR SLEEVE FOR DYNAMIC SHAFT Non-Final OA Caterpillar Inc.
17943993 PRINTED ANNULAR METAL-TO-METAL SEAL Final Rejection Baker Hughes Oilfield Operations LLC
19189950 Combined Multi-Lip Seal Non-Final OA Global Manufacturing Holdings LLC
19175476 SHAFT SEAL APPARATUS AND METHOD OF FABRICATION Non-Final OA Hernon Manufacturing, Inc.
19084373 PRESSURE BREAKER WITH COMPOSITE RING Non-Final OA Dover Pumps & Process Solutions Segment, Inc.
18103878 AIR CONDITIONING ROTATING BODY AND AIR TREATMENT DEVICE Final Rejection DAIKIN INDUSTRIES, LTD.
19111242 SEAL FOR A TRI-CLAMP CONNECTION, AND TRI-CLAMP CONNECTION HAVING SUCH A SEAL Final Rejection U-CONSULTING GMBH
18592146 SNAP TOGETHER METAL SEAL GASKET Final Rejection Hanon Systems
18865040 PRIMARY GASKET FOR A CYLINDER ASSEMBLY, CYLINDER ASSEMBLY Final Rejection Brembo S.p.A.
18523413 MECHANICAL SEAL WITH A SEAL FACE HAVING CHANNELS Final Rejection JOHN CRANE INC.
18651207 Shaft Seal Assembly Non-Final OA Inpro/Seal LLC
18955333 APPARATUS FOR SHIELDING OR SEALING A ROTARY INTERFACE OF A ROTARY ACTUATOR OR OTHER ROTATING DEVICE TO PREVENT INGRESS OF ABRASIVE MEDIA Final Rejection MacDonald, Dettwiler and Associates Inc.
18747808 WEATHER STRIP Non-Final OA NISHIKAWA RUBBER CO., LTD.
18854509 END FACE MECHANICAL SEALING DEVICE, END FACE MECHANICAL SEAL, AND METHOD FOR MOUNTING AN END FACE MECHANICAL SEALING DEVICE Final Rejection Frideco AG
18721195 PISTON RING AND PISTON RING SET Final Rejection KABUSHIKI KAISHA RIKEN

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