Prosecution Insights
Last updated: October 27, 2026

Richard Z Zhang, USPTO Patent Examiner

Listed by the USPTO as ZHANG, RICHARD Z

Tech Center 1700 • Art Units: 1711 1714 1724 1734

This examiner grants 66% of resolved cases

Analysis

ZHANG, RICHARD Z has resolved 212 cases in Tech Center 1700 and Art Unit 1711. The allowance rate is 66.5%, while the interview lift is 63.1%. The median time to allowance is 963 days. The profile pairs an allowance rate above half of resolved cases with a strong interview association, making interview planning a significant practical consideration.

The listed companies are Screen Holdings Co., Ltd., The Procter & Gamble Company, and Lam Research Corporation. The leading firms are OSTROLENK FABER LLP, Arnold & Porter Kaye Scholer LLP, and DENTONS BINGHAM GREENEBAUM LLP. These organizations and counsel provide relevant examples for prosecution work in this art unit.

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

Performance Statistics

66.5%
Allow Rate
+1.5% vs TC avg
240
Total Applications
+63.1%
Interview Lift
963
Avg Prosecution Days
Based on 212 resolved cases, 2023–2026

Rejection Statute Breakdown

1.4%
§101 Eligibility
13.7%
§102 Novelty
45.8%
§103 Obviousness
36.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18736692 AUTOMATIC DISHWASHING DETERGENT WATER-SOLUBLE POUCH COMPRISING SOLVENT Final Rejection The Procter & Gamble Company
19310794 METHOD OF CLEANING CHAMBER COMPONENTS WITH METAL ETCH RESIDUES Non-Final OA Lam Research Corporation
18469619 SUBSTRATE TREATMENT APPARATUS AND METHOD FOR TREATING SUBSTRATE Non-Final OA KIOXIA CORPORATION
18868298 SUBSTRATE PROCESSING METHOD AND SUBSTRATE PROCESSING APPARATUS Non-Final OA Tokyo Electron Limited
18514859 SPACE FILLING DEVICE FOR WET BENCH Non-Final OA Taiwan Semiconductor Manufacturing Co., Ltd.
19106488 WASHING MACHINE FOR WASHING EMPTY CONTAINERS ADAPTED TO BE FILLED WITH A POURABLE PRODUCT AND RELATIVE METHOD Non-Final OA SIDEL PARTICIPATIONS
19066142 SUBSTRATE PROCESSING APPARATUS AND SUBSTRATE PROCESSING METHOD Non-Final OA SCREEN Holdings Co., Ltd.
19019865 SUBSTRATE PROCESSING METHOD AND SUBSTRATE PROCESSING APPARATUS Non-Final OA SCREEN Holdings Co., Ltd.

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Frequently Asked Questions

What is examiner Richard Z Zhang's allowance rate?

66.5% of resolved applications examined by Richard Z Zhang were allowed (212 resolved cases), compared with 63.9% across Art Unit 1711 over the last five years.

Does an interview help with examiner Richard Z Zhang?

This examiner's interview lift is +63.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Richard Z Zhang take to allow a patent?

Applications allowed by Richard Z Zhang took 963 days on average from filing to allowance.

Which art unit does examiner Richard Z Zhang work in?

Richard Z Zhang examines applications in Art Unit 1711 in Tech Center 1700 (Chemistry & Materials).

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