Prosecution Insights
Last updated: April 19, 2026

Examiner: RIDDLE, CHRISTINA A

Tech Center 2800 • Art Units: 1724 2851 2882

This examiner grants 81% of resolved cases

Performance Statistics

80.6%
Allow Rate
+12.6% vs TC avg
956
Total Applications
+13.3%
Interview Lift
1112
Avg Prosecution Days
Based on 908 resolved cases, 2023–2026

Rejection Statute Breakdown

2.1%
§101 Eligibility
24.7%
§102 Novelty
45.4%
§103 Obviousness
17.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18595753 EXTREME ULTRAVIOLET (EUV) SOURCE AND A SUBSTRATE PROCESSING APPARATUS INCLUDING THE SAME Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18368995 EXPOSURE APPARATUS AND DECONTAMINATION APPARATUS Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18779950 LITHOGRAPHY METHOD, ARTICLE MANUFACTURING METHOD, INFORMATION PROCESSING METHOD, COMPUTER READABLE MEDIUM, AND INFORMATION PROCESSING APPARATUS Non-Final OA CANON KABUSHIKI KAISHA
18767396 LITHOGRAPHY APPARATUS AND METHOD FOR OPERATING THE SAME Non-Final OA TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
18624645 LITHOGRAPHIC APPARATUS, INSPECTION METHOD, AND METHOD FOR PERFORMING LITHOGRAPHY PROCESS Final Rejection TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
18732005 APPARATUS AND METHOD FOR AVOIDING A DEGRADATION OF AN OPTICAL USED SURFACE OF A MIRROR MODULE, PROJECTION SYSTEM, ILLUMINATION SYSTEM AND PROJECTION EXPOSURE APPARATUS Non-Final OA Carl Zeiss SMT GmbH
18322009 MIRROR, OPTICAL SYSTEM AND METHOD FOR OPERATING AN OPTICAL SYSTEM Non-Final OA Carl Zeiss SMT GmbH
18353300 SUBSTRATE PROCESSING APPARATUS, SUBSTRATE PROCESSING METHOD, AND RECORDING MEDIUM Non-Final OA Tokyo Electron Limited
18544838 EXPOSURE APPARATUS AND MEASUREMENT SYSTEM Final Rejection NIKON CORPORATION
18783178 SYSTEM AND METHOD FOR CLEANING AN EUV MASK Non-Final OA Taiwan Semiconductor Manufacturing Co., Ltd.
18781567 SYSTEM AND METHOD FOR MONITORING AND CONTROLLING EXTREME ULTRAVIOLET PHOTOLITHOGRAPHY PROCESSES Non-Final OA Taiwan Semiconductor Manufacturing Co., Ltd.
18781721 SYSTEM AND METHOD FOR DETECTING DEBRIS IN A PHOTOLITHOGRAPHY SYSTEM Non-Final OA Taiwan Semiconductor Manufacturing Co., Ltd.
18639022 SUBSTRATE PROCESSING APPARATUS Final Rejection SEMES CO., LTD.
18699358 LITHOGRAPHIC APPARATUS AND ASSOCIATED METHODS Final Rejection ASML NETHERLANDS B.V.
18578780 APPARATUS AND METHOD FOR PREPARING AND CLEANING A COMPONENT Final Rejection ASML NETHERLANDS B.V.
18913610 PROFILE DISPLAY DEVICE, LASER DEVICE, AND ELECTRONIC DEVICE MANUFACTURING METHOD Non-Final OA Gigaphoton Inc.
18746278 GAS LASER DEVICE AND ELECTRONIC DEVICE MANUFACTURING METHOD Non-Final OA Gigaphoton Inc.
18661503 Apparatus and Method for Lithographic Exposure of Large Area Substrates Final Rejection ZS Systems LLC
18376237 APPARATUS AND METHOD FOR DETERMINING A CONDITION ASSOCIATED WITH A PELLICLE Non-Final OA ASML HOLDING N.V
18265876 APPARATUS AND METHOD FOR IMPROVED EXPOSURE OF RELIEF PRECURSORS Non-Final OA XSYS GERMANY GMBH
17435598 MEASUREMENT SYSTEM FOR OPTICAL MEASUREMENT Final Rejection MICRO-EPSILON OPTRONIC GMBH
17904945 SYSTEM AND METHOD FOR DETERMINING THE INTEGRITY OF CONTAINERS BY OPTICAL MEASUREMENT Non-Final OA GasPorOx AB

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