Prosecution Insights
Last updated: May 29, 2026

Examiner: WALKER, CHRISTOPHER RICHARD

Tech Center 3600 • Art Units: 2855 3645

This examiner grants 68% of resolved cases

Performance Statistics

67.5%
Allow Rate
+15.5% vs TC avg
170
Total Applications
+22.2%
Interview Lift
983
Avg Prosecution Days
Based on 117 resolved cases, 2023–2026

Rejection Statute Breakdown

1.2%
§101 Eligibility
4.9%
§102 Novelty
90.7%
§103 Obviousness
1.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18414853 SYSTEM AND METHOD FOR TESTING WELL INTEGRITY Final Rejection CHEVRON U.S.A. INC.
18446263 DISTANCE MEASURING SYSTEM AND METHOD USING PHYSICALLY OFFSET TRANSDUCERS Non-Final OA SAUDI ARABIAN OIL COMPANY
18855366 ARRANGEMENT AND METHOD OF A TUBE-BUNDLE REACTOR AND A SENSOR DEVICE Non-Final OA BASF SE
18772194 INTERFERENCE AREA INFORMATION OUTPUT APPARATUS, INTERFERENCE AREA INFORMATION OUTPUT SYSTEM, INTERFERENCE AREA INFORMATION OUTPUT METHOD, AND RECORDING MEDIUM Non-Final OA NEC Corporation
18690792 OPTICAL FIBER SENSING SYSTEM, OPTICAL FIBER SENSING DEVICE, AND ROAD MONITORING METHOD Final Rejection NEC Corporation
18158389 METHODS AND SYSTEMS FOR MODULAR TRANSDUCER PROBE WITH REDUCED FOOTPRINT Non-Final OA GE Precision Healthcare LLC
18746275 Ultrasonic Transducer Array Transmission Techniques Non-Final OA SIM IP HXR LLC
18334908 OUT-OF-BAND SIGNALING FOR LOCATION-BASED USER DEVICE TRIGGERS Final Rejection T-MOBILE INNOVATIONS LLC
17800726 SELECTION CRITERIA FOR PASSIVE SOUND SENSING IN A LIGHTING IOT NETWORK Final Rejection SIGNIFY HOLDING B.V.
18537871 OBJECT DETECTION DEVICE AND METHOD Non-Final OA Murata Manufacturing Co., Ltd.
17704859 ACOUSTIC WAVE DEVICE AND FILTER DEVICE Non-Final OA Murata Manufacturing Co., Ltd.
18828892 TECHNIQUES FOR ESTIMATING ROOM BOUNDARIES AND LAYOUT USING MICROPHONE PAIRS Non-Final OA HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
18828894 TECHNIQUES FOR ESTIMATING ROOM BOUNDARIES AND LAYOUT USING MICROPHONE PAIRS Non-Final OA HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
18570624 SELF-CALIBRATING FLEXIBLE ULTRASOUND ARRAY FOR MEASURING A CURVED OBJECT Non-Final OA Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
18793671 MATCHING LAYER FOR ACOUSTIC TRANSDUCER Non-Final OA The Penn State Research Foundation
18852243 A Seismic Node and a Method for Producing a Seismic Node Non-Final OA Reflection Marine Norge AS
18850055 ULTRASONIC SENSOR HAVING ACTIVATABLE NOTCH FILTER Non-Final OA VALEO SCHALTER UND SENSOREN GMBH
18847662 A Two-Dimensional Discrete Fourier Transform Hardware Accelerator Non-Final OA Agency for Science, Technology and Research
17616055 Ultrasonic Transducer and Method for Producing an Ultrasonic Transducer Non-Final OA TDK Electronics AG
17950014 PIEZOELECTRIC STRUCTURES Final Rejection The MITRE Corporation
18743598 AUTOMATED PASSIVE ACOUSTIC MONITORING WITH MACHINE LEARNING Non-Final OA BLUEiQ LLC
18454614 METHOD OF ATTENUATING MIGRATION ARTIFACTS Final Rejection ARAMCO SERVICES COMPANY
18691328 SEISMIC CONE PENETRATION TEST TOOLS AND SYSTEMS INCLUDING THE SAME Non-Final OA OCEAN INFINITY OPERATIONS PTE. LTD.
18597493 MIXED ARRAY IMAGING PROBE Non-Final OA DeepSight Technology, Inc.
18585435 Ultrasonic Detection Device Non-Final OA Self Electronics USA Corporation
18254277 SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT FACILITATING EFFICIENCY OF A GROUP WHOSE MEMBERS ARE ON THE MOVE Non-Final OA ELTA SYSTEMS LTD.
18410721 PASSIVE LOW FREQUENCY SEISMIC (LFS) SYSTEM AND METHOD TO DETECT AND IMAGE SUBSURFACE SEARCH OBJECTS AND FLUID PROPERTIES Non-Final OA Tenzor Geo LTD

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