Prosecution Insights
Last updated: October 27, 2026

Karen C Tang, USPTO Patent Examiner

Listed by the USPTO as TANG, KAREN C

Tech Center 2400 • Art Units: 2151 2447 2451

This examiner grants 70% of resolved cases

Analysis

TANG, KAREN C is assigned to tech center 2400 and art unit 2151. The record covers 698 resolved cases, with an allowance rate of 70.5% and a median of 1438 days to allowance. Interview lift is 24.3%, indicating a meaningful relationship between interview activity and the observed results.

Intel Corporation, PayPal Inc., and ORACLE INTERNATIONAL Corporation are the leading companies. The principal firms are FOLEY HOAG, LLP (General), JCIPRNET, and M&B IP Analysts, LLC. The substantial case volume supports use of the profile as a general prosecution reference, while the extended median timing calls for early management of client expectations and portfolio deadlines.

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

Performance Statistics

70.5%
Allow Rate
+12.5% vs TC avg
713
Total Applications
+24.3%
Interview Lift
1438
Avg Prosecution Days
Based on 698 resolved cases, 2023–2026

Rejection Statute Breakdown

14.8%
§101 Eligibility
9.8%
§102 Novelty
60.4%
§103 Obviousness
8.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18719048 SYSTEMS AND METHODS TO CONTROL AIML MODEL RE-TRAINING IN COMMUNICATION NETWORKS Final Rejection Telefonaktiebolaget LM Ericsson (publ)
18812821 MULTIPLE TOP-OF-RACK (TOR) SWITCHES CONNECTED TO A NETWORK VIRTUALIZATION DEVICE Non-Final OA Oracle International Corporation
19187333 MULTI-ACCESS EDGE COMPUTING (MEC) VEHICLE-TO-EVERYTHING (V2X) INTEROPERABILITY SUPPORT FOR MULTIPLE V2X MESSAGE BROKERS Non-Final OA Intel Corporation
19043502 PROTOCOL DATA UNIT (PDU) SET INFORMATION FOR HAPTICS MEDIA DATA Non-Final OA InterDigital VC Holdings, Inc.
18787457 QOS CONTROL METHOD AND COMMUNICATION DEVICE Non-Final OA VIVO MOBILE COMMUNICATION CO., LTD.
18626637 HARDWARE DISTRIBUTION AND ENERGY EFFICIENT SCHEDULING USING DIGITAL EMISSIONS DATA Final Rejection INTERNATIONAL BUSINESS MACHINES CORPORATION
19083988 SYSTEMS AND METHODS FOR PREDICTING AND PROVIDING AUTOMATED ONLINE CHAT ASSISTANCE Non-Final OA PayPal, Inc.
18426366 INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM Non-Final OA FUJIFILM Business Innovation Corp.
19095805 HIDDEN DESKTOP SESSION FOR REMOTE ACCESS Non-Final OA ConnectWise, LLC

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Frequently Asked Questions

What is examiner Karen C Tang's allowance rate?

70.5% of resolved applications examined by Karen C Tang were allowed (698 resolved cases), compared with 81.0% across Art Unit 2151 over the last five years.

Does an interview help with examiner Karen C Tang?

This examiner's interview lift is +24.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Karen C Tang take to allow a patent?

Applications allowed by Karen C Tang took 1,438 days on average from filing to allowance.

Which art unit does examiner Karen C Tang work in?

Karen C Tang examines applications in Art Unit 2151 in Tech Center 2400 (Networking & Security).

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