Prosecution Insights
Last updated: October 26, 2026

Phuong T Bui, USPTO Patent Examiner

Listed by the USPTO as BUI, PHUONG T

Tech Center 1600 • Art Units: 1638 1663

This examiner grants 81% of resolved cases

Analysis

BUI, PHUONG T is an examiner in technology center 1600 and art unit 1638. The profile covers 1199 resolved cases, an allowance rate of 81.2%, and a median of 871 days to allowance. Interviews are associated with a 23.4% lift. The substantial record and high allowance rate provide a useful basis for prosecution planning, while the median interval remains relevant to filing, continuation, and portfolio timing decisions.

Seminis Vegetable Seeds Inc., Nipomo Native Seeds, LLC, and Pioneer Hi-bred International Inc. are the listed companies. The listed firms are DENTONS US LLP, Morgan, Lewis & Bockius LLP (WA), and FOLEY HOAG, LLP (General). Practitioners may use the profile to anticipate the commercial and technical settings represented in the docket, and to decide when interviews could support efficient resolution of claim issues.

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

Performance Statistics

81.2%
Allow Rate
+21.2% vs TC avg
1,240
Total Applications
+23.4%
Interview Lift
871
Avg Prosecution Days
Based on 1199 resolved cases, 2023–2026

Rejection Statute Breakdown

9.7%
§101 Eligibility
22.1%
§102 Novelty
15.4%
§103 Obviousness
45.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18032046 MELON PLANTS WITH MATURITY INDICATOR Non-Final OA Syngenta Crop Protection AG
18919922 ENHANCED DISEASE RESISTANCE IN PLANTS Non-Final OA CORNELL UNIVERSITY

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Frequently Asked Questions

What is examiner Phuong T Bui's allowance rate?

81.2% of resolved applications examined by Phuong T Bui were allowed (1,199 resolved cases), compared with 48.8% across Art Unit 1638 over the last five years.

Does an interview help with examiner Phuong T Bui?

This examiner's interview lift is +23.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Phuong T Bui take to allow a patent?

Applications allowed by Phuong T Bui took 871 days on average from filing to allowance.

Which art unit does examiner Phuong T Bui work in?

Phuong T Bui examines applications in Art Unit 1638 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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