Prosecution Insights
Last updated: April 19, 2026

Examiner: WALKER, CHRISTOPHER RICHARD

Tech Center 3600 • Art Units: 2855 3645

This examiner grants 66% of resolved cases

Performance Statistics

66.1%
Allow Rate
+14.1% vs TC avg
166
Total Applications
+23.6%
Interview Lift
1015
Avg Prosecution Days
Based on 112 resolved cases, 2023–2026

Rejection Statute Breakdown

4.1%
§101 Eligibility
16.0%
§102 Novelty
58.3%
§103 Obviousness
20.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18414853 SYSTEM AND METHOD FOR TESTING WELL INTEGRITY Final Rejection CHEVRON U.S.A. INC.
18594498 SYSTEMS AND METHODS FOR DEPLOYING SEISMIC LAND SENSORS Final Rejection SAUDI ARABIAN OIL COMPANY
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
18748306 REFINEMENT STEP FOR BEAMFORMING FOR ACOUSTIC SOURCE SEPARATION Non-Final OA Halliburton Energy Services, Inc.
18690792 OPTICAL FIBER SENSING SYSTEM, OPTICAL FIBER SENSING DEVICE, AND ROAD MONITORING METHOD Final Rejection NEC Corporation
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
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
18158389 METHODS AND SYSTEMS FOR MODULAR TRANSDUCER PROBE WITH REDUCED FOOTPRINT Non-Final OA GE Precision Healthcare LLC
17800726 SELECTION CRITERIA FOR PASSIVE SOUND SENSING IN A LIGHTING IOT NETWORK Final Rejection SIGNIFY HOLDING B.V.
17704859 ACOUSTIC WAVE DEVICE AND FILTER DEVICE Non-Final OA Murata Manufacturing Co., Ltd.
18441010 ELECTRONIC DEVICE Final Rejection VIVO MOBILE COMMUNICATION CO., LTD.
18561251 COMMUNICATION APPARATUS AND ESTIMATION METHOD Final Rejection NTT, Inc.
18850055 ULTRASONIC SENSOR HAVING ACTIVATABLE NOTCH FILTER Non-Final OA VALEO SCHALTER UND SENSOREN GMBH
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
18806582 SELF-CLEANING ULTRASONIC SENSORS Non-Final OA SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
18852243 A Seismic Node and a Method for Producing a Seismic Node Non-Final OA Reflection Marine Norge AS
17616055 Ultrasonic Transducer and Method for Producing an Ultrasonic Transducer Non-Final OA TDK Electronics AG
17950014 PIEZOELECTRIC STRUCTURES Final Rejection The MITRE 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.
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.
18686164 SEAFLOOR OBSERVATION NETWORK-BASED SUBSURFACE BUOY DEVICE WITH REAL-TIME POWER SUPPLYING AND HIGH-SPEED DATA TRANSMITTING Non-Final OA Institute of Acoustics, Chinese Academy of Sciences
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
18562796 Method and System for Mapping a Region Final Rejection FNV IP B.V.

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month