Prosecution Insights
Last updated: October 27, 2026

Ding Y Tan, USPTO Patent Examiner

Listed by the USPTO as TAN, DING Y

Tech Center 4100 • Art Units: 2834 3632 3637 3673 3795 4100

This examiner grants 76% of resolved cases

Analysis

TAN, DING Y examines in tech center 4100 and art unit 2834. The record shows 269 resolved cases, a 76.2% allowance rate, and a median of 783 days to allowance. Interview lift is 17.6%, adding a positive interview-related signal to an allowance outcome.

The leading companies are Boston Scientific Corporation, Tilta Inc., and The Board of Regents of the University of Oklahoma. The principal firms are WOLF GREENFIELD & SACKS, P.C., ADE & COMPANY INC., and BRAKE HUGHES BELLERMANN LLP. The median timing is a useful scheduling reference, and the allowance result supports focused prosecution planning for matters with similar technical and procedural characteristics.

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

Performance Statistics

76.2%
Allow Rate
+16.2% vs TC avg
292
Total Applications
+17.6%
Interview Lift
783
Avg Prosecution Days
Based on 269 resolved cases, 2023–2026

Rejection Statute Breakdown

0.1%
§101 Eligibility
29.0%
§102 Novelty
51.2%
§103 Obviousness
18.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18647729 COMPLIANT MOUNTS FOR A DISPLAY BACK LIGHT UNIT Final Rejection GOOGLE LLC
19071144 SUPPORT DEVICE FOR CATHETER OR INJECTION LINE Non-Final OA Boston Scientific Scimed, Inc.
18962438 DEVICES, SYSTEMS, AND METHODS FOR HANGING FLUID RESERVOIRS IN SYSTEMS TO SUPPLY FLUIDS TO AN ENDOSCOPE Non-Final OA Boston Scientific Scimed, Inc.
19171055 TRIPOD HEAD Final Rejection TILTA INC.
19091718 DETACHABLE STRUCTURE AND AUXILIARY SHOOTING DEVICE Non-Final OA TILTA INC.

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Frequently Asked Questions

What is examiner Ding Y Tan's allowance rate?

76.2% of resolved applications examined by Ding Y Tan were allowed (269 resolved cases), compared with 68.3% across Art Unit 2834 over the last five years.

Does an interview help with examiner Ding Y Tan?

This examiner's interview lift is +17.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Ding Y Tan take to allow a patent?

Applications allowed by Ding Y Tan took 783 days on average from filing to allowance.

Which art unit does examiner Ding Y Tan work in?

Ding Y Tan examines applications in Art Unit 2834 in Tech Center 4100.

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