Prosecution Insights
Last updated: October 25, 2026

Chunling Ding, USPTO Patent Examiner

Listed by the USPTO as DING, CHUNLING

Tech Center 3600 • Art Units: 3685 3694 3699

This examiner grants 56% of resolved cases

Analysis

DING, CHUNLING has resolved 189 cases in Tech Center 3600 and Art Unit 3685. The allowance rate is 56.1%, and the median time to allowance is 1128 days. The interview lift is 61.5%, showing a strong recorded association between interviews and allowance.

The company portfolio includes Oopoll Inc., Nchain Licensing AG, and Giesecke+Devrient Advance52 GmbH. The listed firms are Sheppard Mullin Richter & Hampton LLP, FISH & RICHARDSON P.C. (TC), and Galvani Smith PLLC. The allowance result is moderate, while the interview measure makes examiner engagement an especially important planning consideration.

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

Performance Statistics

56.1%
Allow Rate
+4.1% vs TC avg
209
Total Applications
+61.5%
Interview Lift
1128
Avg Prosecution Days
Based on 189 resolved cases, 2023–2026

Rejection Statute Breakdown

26.1%
§101 Eligibility
2.6%
§102 Novelty
38.1%
§103 Obviousness
27.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18850534 COMMUNICATION SYSTEM, METHOD AND COMPUTER PROGRAM Non-Final OA nChain Licensing AG
19400405 DIGITAL CURRENCY WALLET AND DIGITAL CURRENCY SYSTEM Non-Final OA Giesecke+Devrient advance52 GmbH
19039708 SYSTEMS FOR REIMBURSING AND RECONCILING PHARMACY-RELATED TRANSACTIONS Non-Final OA TRUVERIS, INC.
19029789 TOOL FOR CREATING AND MANAGING SOCIAL MEDIA-BASED CONTESTS WITH PRESENTATION-BALANCING COMPONENT AND STRENGTH-SCORING COMPONENT Final Rejection ooPoll, Inc.
18340406 TOOL FOR CREATING AND MANAGING SOCIAL MEDIA-BASED CONTESTS WITH PRESENTATION-BALANCING COMPONENT AND STRENGTH-SCORING COMPONENT Final Rejection ooPoll, Inc.
18787672 Blockchain-Enabled Electronic Futures Trading System with Optional Computerized Delivery of Cryptocurrency Non-Final OA Cboe Exchange, Inc.
18081999 Hidden Flow Discovery Final Rejection Mastercard International Corporation

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Frequently Asked Questions

What is examiner Chunling Ding's allowance rate?

56.1% of resolved applications examined by Chunling Ding were allowed (189 resolved cases), compared with 40.6% across Art Unit 3685 over the last five years.

Does an interview help with examiner Chunling Ding?

This examiner's interview lift is +61.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Chunling Ding take to allow a patent?

Applications allowed by Chunling Ding took 1,128 days on average from filing to allowance.

Which art unit does examiner Chunling Ding work in?

Chunling Ding examines applications in Art Unit 3685 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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