Prosecution Insights
Last updated: August 18, 2026

Examiner: PERSAUD, DEORAM

Tech Center 2800 • Art Units: 2882

This examiner grants 77% of resolved cases

Performance Statistics

76.8%
Allow Rate
+8.8% vs TC avg
799
Total Applications
+11.8%
Interview Lift
1015
Avg Prosecution Days
Based on 759 resolved cases, 2023–2026

Rejection Statute Breakdown

3.5%
§101 Eligibility
31.5%
§102 Novelty
47.8%
§103 Obviousness
6.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18903621 RETICLE STAGE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18505041 PHOTOLITHOGRAPHY APPARATUS AND OPERATION METHOD OF THE SAME Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18489404 FABRICATION OF NANOIMPRINT WORKING STAMPS WITH COMBINED PATTERNS FROM MULTIPLE MASTER STAMPS Final Rejection GOOGLE LLC
18739931 SUBSTRATE CHUCK, LITHOGRAPHY APPARATUS, AND ARTICLE MANUFACTURING METHOD Non-Final OA CANON KABUSHIKI KAISHA
18100698 PHASE PLATE AND FABRICATION METHOD FOR COLOR-SEPARATED LASER BACKLIGHT IN DISPLAY SYSTEMS Final Rejection Meta Platforms Technologies, LLC
19026754 SEMICONDUCTOR DEVELOPER TOOL AND METHODS OF OPERATION Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18978369 RETICLE CLEANING DEVICE AND METHOD OF USE Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18942941 GRAY TONE UNIFORMITY CONTROL OVER SUBSTRATE TOPOGRAPHY Non-Final OA Applied Materials, Inc.
18486726 SYSTEMS AND METHODS FOR DIGITAL LITHOGRAPHY SCAN SEQUENCING Final Rejection Applied Materials, Inc.
18461096 EXPOSURE APPARATUS, EXPOSURE METHOD, AND METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE Final Rejection Kioxia Corporation
18892069 CONTACTS FOR REDUCING WEAR IN A RETICLE CONTAINER Non-Final OA ENTEGRIS, INC.
18868349 UNDERLAYER WITH BONDED DOPANTS FOR PHOTOLITHOGRAPHY Non-Final OA Lam Research Corporation
19046226 DRIVE DEVICE, OPTICAL SYSTEM AND LITHOGRAPHY APPARATUS Non-Final OA Carl Zeiss SMT GmbH
18675653 ILLUMINATION OPTICAL SYSTEM, EXPOSURE APPARATUS, IRRADIATION METHOD, AND COMPONENT MANUFACTURING METHOD Final Rejection Ushio Denki Kabushiki Kaisha
19009394 LITHOGRAPHIC APPARATUS AND METHOD Non-Final OA ASML NETHERLANDS B.V
18870245 SYSTEM, APPARATUS AND METHOD FOR SELECTIVE SURFACE TREATMENT Non-Final OA ASML Netherlands B.V.
18868977 METHOD FOR ALIGNING AN ILLUMINATION-DETECTION SYSTEM OF A METROLOGY DEVICE AND ASSOCIATED METROLOGY DEVICE Non-Final OA ASML Netherlands B.V.
18790520 EUV LITHOGRAPHY SYSTEM HAVING A GAS-BINDING COMPONENT Final Rejection ASML Netherlands B.V.
18687727 THERMAL CONDITIONING UNIT, SUBSTRATE HANDLING DEVICE AND LITHOGRAPHIC APPARATUS Non-Final OA ASML NETHERLANDS B.V.
18578947 LITHOGRAPHY SYSTEM, SUBSTRATE SAG COMPENSATOR, AND METHOD Non-Final OA ASML Netherlands B.V.
18567053 METHOD AND ARRANGEMENT FOR DETERMINING THERMALLY-INDUCED DEFORMATIONS Final Rejection ASML NETHERLANDS B.V.
18233263 METHOD AND SYSTEM TO MONITOR A PROCESS APPARATUS Final Rejection ASML NETHERLANDS B.V.

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