Prosecution Insights
Last updated: October 26, 2026

Lien Thuy Tran, USPTO Patent Examiner

Listed by the USPTO as TRAN, LIEN THUY

Tech Center 3700 • Art Units: 1781 1789 1793 1794 3761

This examiner grants 29% of resolved cases

Analysis

TRAN, LIEN THUY is assigned to Tech Center 3700 and Art Unit 1781. The record includes 905 resolved cases, an allowance rate of 28.7%, and an interview lift of 26.5%. The median time to allowance is 1457 days. This combination presents a large prosecution record with a comparatively low allowance rate and a meaningful interview-associated change, making early issue identification and disciplined response sequencing important considerations for applicants.

The company list includes Flora Food Global Principal B V, Arla Foods Amba, and Intercontinental Great Brands LLC. The leading firms are FOLEY & LARDNER LLP, ARENTFOX SCHIFF LLP - Los Angeles, and FBT Gibbons LLP. Counsel reviewing this docket can use those participants as reference points for technology-specific claim presentation, interview preparation, and decisions about when to narrow or preserve claim scope.

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

Performance Statistics

28.7%
Allow Rate
-41.3% vs TC avg
997
Total Applications
+26.5%
Interview Lift
1457
Avg Prosecution Days
Based on 905 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
7.9%
§102 Novelty
53.3%
§103 Obviousness
32.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18751667 FAT LUMP COMPOSITION AND MEAT SUBSTITUTE Non-Final OA FUJIFILM CORPORATION
18863556 METHOD FOR PREPARATION OF TEMPEH, TEMPEH PREPARED THEREBY, SAUCE CONTAINING PREPARED TEMPEH, AND PREPARATION METHOD THEREFOR Non-Final OA CJ CHEILJEDANG CORPORATION
18255762 FAT REDUCED GROUND MUCILAGINOUS SEEDS AS AFFORDABLE BINDER Non-Final OA SOCIETE DES PRODUITS NESTLE S.A.
15734727 MODIFIED RAPESEED PROTEIN ISOLATE Non-Final OA DSM IP ASSETS B.V.
18850670 A FAT COMPOSITION COMPRISING A VEGETABLE FAT PHASE WHICH IS FREE FROM PALM OIL AND/OR FRACTIONS THEREOF Non-Final OA AAK AB (PUBL)

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Frequently Asked Questions

What is examiner Lien Thuy Tran's allowance rate?

28.7% of resolved applications examined by Lien Thuy Tran were allowed (905 resolved cases), compared with 47.7% across Art Unit 1781 over the last five years.

Does an interview help with examiner Lien Thuy Tran?

This examiner's interview lift is +26.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Lien Thuy Tran take to allow a patent?

Applications allowed by Lien Thuy Tran took 1,457 days on average from filing to allowance.

Which art unit does examiner Lien Thuy Tran work in?

Lien Thuy Tran examines applications in Art Unit 1781 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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