Prosecution Insights
Last updated: August 18, 2026

Examiner: RIDDLE, CHRISTINA A

Tech Center 3600 • Art Units: 1724 1754 2851 2882 3652

This examiner grants 81% of resolved cases

Performance Statistics

80.8%
Allow Rate
+28.8% vs TC avg
971
Total Applications
+13.8%
Interview Lift
1072
Avg Prosecution Days
Based on 927 resolved cases, 2023–2026

Rejection Statute Breakdown

2.7%
§101 Eligibility
21.0%
§102 Novelty
47.6%
§103 Obviousness
18.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18519497 EXTREME ULTRAVIOLET EXPOSURE APPARATUS INCLUDING A MASK STAGE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
19056497 MEASURING METHOD, MEASURING APPARATUS, LITHOGRAPHY APPARATUS, AND ARTICLE MANUFACTURING METHOD Non-Final OA CANON KABUSHIKI KAISHA
19009090 ILLUMINATION OPTICAL SYSTEM INCLUDING TEMPERATURE COMPENSATED APERTURE Non-Final OA SAMSUNG DISPLAY CO., LTD.
18215485 CONTROLLING ELECTROSTATIC CHARGE ON MASKS FOR EXTREME ULTRAVIOLET LITHOGRAPHY Non-Final OA Intel Corporation
19035489 PATTERN EXPOSURE DEVICE AND DEVICE MANUFACTURING METHOD Non-Final OA NIKON CORPORATION
19005395 VIBRATION CONTROL OF STRUCTURAL ELEMENTS OF EXPOSURE APPARATUS Non-Final OA Nikon Corporation
18852949 PLACEMENT MEMBER Non-Final OA KYOCERA CORPORATION
18767396 LITHOGRAPHY APPARATUS AND METHOD FOR OPERATING THE SAME Final Rejection TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
18783178 SYSTEM AND METHOD FOR CLEANING AN EUV MASK Final Rejection Taiwan Semiconductor Manufacturing Co., Ltd.
18781721 SYSTEM AND METHOD FOR DETECTING DEBRIS IN A PHOTOLITHOGRAPHY SYSTEM Final Rejection Taiwan Semiconductor Manufacturing Co., Ltd.
18397265 CONSTRUCTING A SUBSTRATE TOPOLOGY MAP BASED ON MEASURED PROPERTIES Non-Final OA APPLIED MATERIALS, INC.
18417564 SUBSTRATE PROCESSING SYSTEM AND SUBSTRATE PROCESSING METHOD Non-Final OA Tokyo Electron Limited
18353300 SUBSTRATE PROCESSING APPARATUS, SUBSTRATE PROCESSING METHOD, AND RECORDING MEDIUM Final Rejection Tokyo Electron Limited
19076000 HOLDING DEVICE FOR AN OPTICAL COMPONENT HAVING AN OPTICAL SURFACE WITH A POLYGONAL BORDER AND HAVING A CYLINDRICAL SUBSTRATE BODY Non-Final OA Carl Zeiss SMT GmbH
19011435 MIRROR FOR A PROJECTION EXPOSURE APPARATUS Non-Final OA Carl Zeiss SMT GmbH
18988581 IMAGING EUV OPTICAL UNIT FOR IMAGING AN OBJECT FIELD INTO AN IMAGE FIELD Non-Final OA Carl Zeiss SMT GmbH
18480263 ACTUATOR-SENSOR DEVICE AND LITHOGRAPHY APPARATUS Non-Final OA Carl Zeiss SMT GmbH
18876007 ILLUMINATION ADJUSTMENT APPARATUSES AND LITHOGRAPHIC APPARATUSES Non-Final OA ASML Netherlands B.V.
18962837 CLEANING A STRUCTURE SURFACE IN AN EUV CHAMBER Non-Final OA ASML Netherlands B.V.
18699358 LITHOGRAPHIC APPARATUS AND ASSOCIATED METHODS Final Rejection ASML NETHERLANDS B.V.
17922580 SUBSTRATE SUPPORT SYSTEM, LITHOGRAPHIC APPARATUS AND METHOD OF EXPOSING A SUBSTRATE Final Rejection ASML NETHERLANDS B.V.
17886348 MASK DEFECT DETECTION Non-Final OA ASML Netherlands B.V.
18376237 APPARATUS AND METHOD FOR DETERMINING A CONDITION ASSOCIATED WITH A PELLICLE Final Rejection ASML HOLDING N.V
18976951 AIR CONDITIONER AND SUBSTRATE TREATING APPARATUS INCLUDING THE SAME Non-Final OA SEMES CO., LTD.

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