Prosecution Insights
Last updated: October 02, 2026

Examiner: WHITESELL, STEVEN H

Tech Center 2800 • Art Units: 1737 1759 2682 2813 2851 2882

This examiner grants 82% of resolved cases

Analysis

Steven H. Whitesell is an examiner in Art Unit 1737, which is part of Tech Center 2800. He has a robust track record with 973 resolved cases. His allowance rate is 82.0 percent, showing that a strong majority of applications result in a patent grant. This 82.0 percent rate indicates a favorable environment for applicants seeking to navigate the examination process successfully.

The data reveals an interview lift of 12.8 percent for this examiner. This positive lift suggests that direct communication is an effective tool for advancing applications and overcoming rejections. Practitioners should utilize the 12.8 percent lift to improve their chances of success, especially in complex cases. The 973 resolved cases provide a reliable statistical foundation for this strategy.

The median time to allowance is 958 days. This 958-day timeframe serves as a useful guide for managing client expectations regarding the duration of the patent lifecycle. By combining the 82.0 percent allowance rate with the 958-day median, attorneys can develop a comprehensive prosecution plan. These figures highlight the procedural tendencies within Tech Center 2800.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

81.9%
Allow Rate
+13.9% vs TC avg
1,016
Total Applications
+12.9%
Interview Lift
958
Avg Prosecution Days
Based on 975 resolved cases, 2023–2026

Rejection Statute Breakdown

3.2%
§101 Eligibility
27.5%
§102 Novelty
50.4%
§103 Obviousness
13.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19030117 METHOD OF CONFIGURING EXTREME ULTRAVIOLET (EUV) SOURCE, AND EUV EXPOSURE METHOD USING THE EUV SOURCE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
19064395 HOLDING APPARATUS, SUBSTRATE PROCESSING APPARATUS AND ARTICLE MANUFACTURING METHOD Non-Final OA CANON KABUSHIKI KAISHA
18060593 LITHOGRAPHIC PROCESSES FOR MAKING POLYMER-BASED ELEMENTS Non-Final OA Intel Corporation
18528903 EXPOSURE APPARATUS Final Rejection NIKON CORPORATION
18644211 SUBSTRATE TREATMENT APPARATUS Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
18787928 RETICLE ENCLOSURE FOR LITHOGRAPHY SYSTEMS Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18638982 RADIATION SOURCE APPARATUS AND METHOD FOR OPERATING THE SAME Final Rejection TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
18451866 SEMICONDUCTOR DEVICE Non-Final OA TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
18946633 STORAGE FOR EXTREME ULTRAVIOLET LIGHT LITHOGRAPHY Non-Final OA Taiwan Semiconductor Manufacturing Co., Ltd.
19170138 DEVELOPING APPARATUS, DEVELOPING METHOD, AND COMPUTER PROGRAM Non-Final OA Tokyo Electron Limited
18552906 DRAWING APPARATUS AND DRAWING METHOD Final Rejection SCREEN Holdings Co., Ltd.
19082444 METHOD FOR OPERATING A PROJECTION EXPOSURE SYSTEM Non-Final OA Carl Zeiss SMT GmbH
19073220 MICROELECTROMECHANICAL DEVICE Non-Final OA Carl Zeiss SMT GmbH
19018304 LENS ELEMENT FOR A MICROLITHOGRAPHIC PROJECTION EXPOSURE APPARATUS DESIGNED FOR OPERATION IN THE DUV, AND METHOD AND ARRANGEMENT FOR FORMING AN ANTIREFLECTION LAYER Non-Final OA Carl Zeiss SMT GmbH
18901513 DEVICE AND METHOD FOR ALIGNING TWO COMPONENTS Non-Final OA Carl Zeiss SMT GmbH
18895292 DRIVE DEVICE, OPTICAL SYSTEM AND LITHOGRAPHY APPARATUS Final Rejection Carl Zeiss SMT GmbH
18638890 MEASURING DEVICE AND METHOD FOR INSPECTING PHOTOMASKS INTENDED FOR EUV MICROLITHOGRAPHY Non-Final OA Carl Zeiss SMT GmbH
18362630 METHOD FOR PRODUCING A MULTI-PART MIRROR OF A PROJECTION ILLUMINATION SYSTEM FOR MICROLITHOGRAPHY Final Rejection Carl Zeiss SMT Gmbh
18842640 APPARATUS AND METHODS FOR FILTERING MEASUREMENT RADIATION Non-Final OA ASML Netherlands B.V.
18294202 AN OBJECT GRIPPER, A METHOD OF HOLDING AN OBJECT AND A LITHOGRAPHIC APPARATUS Final Rejection ASML NETHERLANDS B.V.
18533662 OBJECT TABLE, A STAGE APPARATUS AND A LITHOGRAPHIC APPARATUS Final Rejection ASML NETHERLANDS B. V.
18511454 PROCESS WINDOW BASED ON DEFECT PROBABILITY Final Rejection ASML NETHERLANDS B.V.
18265606 METHOD OF METROLOGY AND ASSOCIATED APPARATUSES Non-Final OA ASML Netherlands B.V.
18025183 TARGET STRUCTURE AND ASSOCIATED METHODS AND APPARATUS Final Rejection ASML NETHERLANDS B.V.
17874582 COMPUTATIONAL METROLOGY BASED CORRECTION AND CONTROL Non-Final OA ASML NETHERLANDS B.V.
17277583 METROLOGY METHOD AND APPARATUS THEREFOR Non-Final OA ASML NETHERLANDS B.V.
17791641 LITHOGRAPHIC APPARATUS AND METHOD FOR DRIFT COMPENSATION Final Rejection ASML HOLDING N.V.
17283056 METHOD TO CREATE THE IDEAL SOURCE SPECTRA WITH SOURCE AND MASK OPTIMIZATION Final Rejection CYMER, LLC
18902197 IMAGING OVERLAY TARGETS USING MOIRÉ ELEMENTS AND ROTATIONAL SYMMETRY ARRANGEMENTS Non-Final OA KLA Corporation
18421454 OVERLAY METROLOGY TARGET FOR DIE-TO-WAFER OVERLAY METROLOGY Non-Final OA KLA Corporation

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