Prosecution Insights
Last updated: October 26, 2026

Doris Ling, USPTO Patent Examiner

Listed by the USPTO as LING, DORIS

Tech Center 3700 • Art Units: 1761 1764 1767 3783

This examiner grants 25% of resolved cases

Analysis

LING, DORIS is a USPTO patent examiner in Tech Center 3700 and Art Unit 1761. The record covers 24 resolved cases, with a 25.0% allowance rate and a median of 1332 days to allowance. The allowance figure indicates that only a minority of matters in this record reached allowance, while the median timing reflects a lengthy prosecution path.

The interview lift is 27.3%, indicating that interviews have a positive association with allowance outcomes despite the lower overall allowance rate. The listed companies are Toray Industries, Illinois Tool Works, and Shofu. The listed firms are Birch Stewart Kolasch & Birch, Harness Dickey, and Adler Pollock & Sheehan. Given the limited record, practitioners should use these figures as directional context and emphasize disciplined response strategy.

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

Performance Statistics

25.0%
Allow Rate
-45.0% vs TC avg
82
Total Applications
+27.3%
Interview Lift
1332
Avg Prosecution Days
Based on 24 resolved cases, 2023–2026

Rejection Statute Breakdown

1.7%
§101 Eligibility
16.0%
§102 Novelty
51.4%
§103 Obviousness
23.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18387887 MARINE REPAIR COMPOSITION Non-Final OA Illinois Tool Works Inc.
18698335 FIBER-REINFORCED THERMOPLASTIC RESIN COMPOSITION Non-Final OA Toray Industries, Inc.
17773119 MOLDING MATERIAL AND MOLDED ARTICLE Final Rejection TORAY INDUSTRIES, INC.
18690565 FLUORORUBBER COMPOSITION Non-Final OA NOK CORPORATION
18688636 ORGANOPOLYSILOXANE COMPOUND, ROOM TEMPERATURE-CURABLE ORGANOPOLYSILOXANE COMPOSITION, AND ARTICLE Non-Final OA SHIN-ETSU CHEMICAL CO., LTD.
18557204 Rubber Component With Reduced Drug Potency Loss for Syringe Stopper and Container Closure System Applications Non-Final OA Becton, Dickinson and Company
17757261 NOVEL PROCESS FOR PREPARING A BONDING RESIN Final Rejection Stora Enso OYJ
18683446 ANTIFOGGING AGENT COMPOSITION, AND ANTIFOGGING ARTICLE Non-Final OA NOF CORPORATION
17908451 METHOD FOR MANUFACTURING FIBROUS CELLULOSE AND METHOD FOR MANUFACTURING FIBROUS CELLULOSE COMPOSITE RESIN Final Rejection DAIO PAPER CORPORATION

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Frequently Asked Questions

What is examiner Doris Ling's allowance rate?

25.0% of resolved applications examined by Doris Ling were allowed (24 resolved cases), compared with 46.8% across Art Unit 1761 over the last five years.

Does an interview help with examiner Doris Ling?

This examiner's interview lift is +27.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Doris Ling take to allow a patent?

Applications allowed by Doris Ling took 1,332 days on average from filing to allowance.

Which art unit does examiner Doris Ling work in?

Doris Ling examines applications in Art Unit 1761 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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