Prosecution Insights
Last updated: October 26, 2026

Tahseen Khan, USPTO Patent Examiner

Listed by the USPTO as KHAN, TAHSEEN

Tech Center 4100 • Art Units: 1781 1783 3635 4100

This examiner grants 62% of resolved cases

Analysis

KHAN, TAHSEEN is a USPTO patent examiner in tech center 4100 and art unit 1781. The profile contains 950 resolved cases, with an allowance rate of 61.7% and a median of 1208 days to allowance. Interview lift is 20.2%, indicating a higher allowance outcome among interview-associated cases than among the corresponding non-interview cases.

The recorded companies are Compagnie de Saint-Gobain S.A., Samsung Electronics Co., Ltd., and Samsung Display Co., Ltd. The leading firms are Cushman Partners, LLC, CANTOR COLBURN LLP, and SUGHRUE MION, PLLC. The substantial case history makes the profile useful for identifying prosecution patterns. Counsel can consider interviews when selecting response tactics, while the median timing provides a basis for planning resources and discussing expected progression with clients.

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

Performance Statistics

61.7%
Allow Rate
+1.7% vs TC avg
1,037
Total Applications
+20.2%
Interview Lift
1208
Avg Prosecution Days
Based on 950 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
13.8%
§102 Novelty
70.7%
§103 Obviousness
6.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18792922 VACUUM ADIABATIC BODY AND REFRIGERATOR Final Rejection LG ELECTRONICS INC.
19022515 ELECTRONIC DEVICE INCLUDING GLASS MEMBER AND METHOD FOR MANUFACTURING GLASS MEMBER Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18792568 REFRIGERATOR Final Rejection SAMSUNG ELECTRONICS CO., LTD.
19031209 ELECTRONIC DEVICES WITH TEXTURED GLASS AND GLASS CERAMIC COMPONENTS Non-Final OA Apple Inc.
19097404 LAMINATED GLASS AND VEHICLE Non-Final OA FUYAO GLASS INDUSTRY GROUP CO., LTD.
18793764 WINDOW, DISPLAY DEVICE, AND METHOD FOR MANUFACTURING WINDOW Non-Final OA Samsung Display Co., LTD.
18993876 ARTICLE FIXTURE, METHOD FOR REMOVING ARTICLE, AND ADHESIVE SHEET UNIT Non-Final OA Solventum Intellectual Properties Company
18695431 BIODEGRADABLE LAMINATING FILM AND CONTAINER MADE OUT OF IT Non-Final OA SOCIETE DES PRODUITS NESTLE S.A.
18992857 METAL FILM AND ELECTRONIC COMPONENT Non-Final OA KYOCERA Corporation
18753008 TAPE GREEN BODY INCLUDING INORGANIC HYDROXIDE TO REDUCE IGNITION DURING BINDER BURNOUT AND METHOD OF MANUFACTURING CERAMIC TAPE FROM THE TAPE GREEN BODY Non-Final OA CORNING INCORPORATED
18850388 SOFT MAGNETIC IRON ALLOY SHEET, METHOD OF MANUFACTURING SOFT MAGNETIC IRON ALLOY SHEET, AND IRON CORE AND ROTATING ELECTRIC MACHINE INCLUDING SOFT MAGNETIC IRON ALLOY SHEET Non-Final OA Hitachi, Ltd.
18669324 COMPOSITE SUBSTRATE AND MANUFACTURING METHOD THEREOF Non-Final OA ROHM CO., LTD.
19037527 ENCAPSULATION MATERIALS FOR FLAT OPTICAL DEVICES Non-Final OA Applied Materials, Inc.
18835510 ANNULAR LAMINATE, SEAL MATERIAL, AND MANUFACTURING METHOD Final Rejection VALQUA, LTD.
18729809 TRANSPARENT SUBSTRATE PROVIDED WITH A FUNCTIONAL STACK OF THIN LAYERS Non-Final OA SAINT-GOBAIN GLASS FRANCE
18908906 ADHESIVE COMPOSITE MATERIAL AND METHODS OF FORMING THE SAME Non-Final OA SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
18287221 RECESS FILLING MATERIAL KIT, CURED PRODUCT THEREOF, AND RECESS FILLING METHOD Non-Final OA Resonac Corporation
18838251 NANOCATENANE STRUCTURE AND NANOMACHINE INCLUDING NANOCATENANE STRUCTURE Non-Final OA SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
18694783 METHOD FOR MANUFACTURING A CONNECTION FILM Final Rejection DEXERIALS CORPORATION
18715136 LAMINATE BARRIER WITH CERAMIC OR AEROGEL LAYER DEFINING VOIDS CONTAINING ENDOTHERMIC MATERIAL Non-Final OA Dow Global Technologies LLC

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Frequently Asked Questions

What is examiner Tahseen Khan's allowance rate?

61.7% of resolved applications examined by Tahseen Khan were allowed (950 resolved cases), compared with 47.7% across Art Unit 1781 over the last five years.

Does an interview help with examiner Tahseen Khan?

This examiner's interview lift is +20.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Tahseen Khan take to allow a patent?

Applications allowed by Tahseen Khan took 1,208 days on average from filing to allowance.

Which art unit does examiner Tahseen Khan work in?

Tahseen Khan examines applications in Art Unit 1781 in Tech Center 4100.

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