Prosecution Insights
Last updated: October 01, 2026

Examiner: NGUYEN, BOI-LIEN THI

Tech Center 1700 • Art Units: 1779 1787

This examiner grants 24% of resolved cases

Analysis

Boi-Lien Thi Nguyen is an examiner in Tech Center 1700 and Art Unit 1779. The data for this profile is based on 63 resolved cases. The allowance rate is 23.8 percent, which serves as the baseline probability of success for applications in this portfolio. This rate provides a benchmark for practitioners to evaluate the likelihood of a grant when filing in this unit.

The median days to allowance is 1341. This figure represents the time required for an application to reach a grant. Practitioners can use the 1341-day timeline to manage client expectations regarding the duration of the prosecution process. This duration reflects the pace of work for the 63 resolved cases concluded by the examiner.

The interview lift is 30.0 percent. This metric indicates the increase in the allowance rate when an interview is conducted. When compared to the 23.8 percent allowance rate, the 30.0 percent lift suggests that oral advocacy is a productive tool for resolving outstanding issues. For matters in Art Unit 1779, the data indicates that interviews are associated with a higher likelihood of moving a case toward allowance.

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

Performance Statistics

23.8%
Allow Rate
-41.2% vs TC avg
108
Total Applications
+30.0%
Interview Lift
1341
Avg Prosecution Days
Based on 63 resolved cases, 2023–2026

Rejection Statute Breakdown

0.2%
§101 Eligibility
16.2%
§102 Novelty
55.9%
§103 Obviousness
27.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18843218 SLURRY FILTERING APPARATUS AND SEPARATOR MANUFACTURING SYSTEM INCLUDING SAME Non-Final OA LG ENERGY SOLUTION, LTD.
17582086 MANAGED ECOSYSTEM UTILIZING PRODUCED WATER FROM OIL AND/OR GAS RECOVERY OPERATIONS AND METHOD FOR SEQUESTERING CARBON DIOXIDE USING SAME Final Rejection Saudi Arabian Oil Company
17743808 MULTISTAGE GREYWATER TREATMENT SYSTEM Non-Final OA Kohler Co.
18557818 GREEN ALTERNATIVE POLYURETHANE ADHESIVE Final Rejection Henkel AG & Co. KGaA
18857233 APPARATUS AND METHOD TO REMOVE TRITIUM FROM HIGH VOLUMETRIC WASTEWATERS Non-Final OA KOREA ATOMIC ENERGY RESEARCH INSTITUTE
18858100 Dialyzer for Blood Treatment and Corresponding System Non-Final OA Fresenius Medical Care Deutschland GmbH
18299033 ADVANCED OXIDATION USING SUPEROXIDE RADICAL AND FREE AVAILABLE CHLORINE Final Rejection University of Washington
18374197 PH-RESPONSIVE ADSORPTIVE COMPOSITE POLYMERIC MEMBRANES Non-Final OA Khalifa University of Science and Technology
18455736 WATER STERILIZER AND CONTENT-FILLING SYSTEM Final Rejection DAI NIPPON PRINTING CO., LTD.
18704081 RECOVERING POLY(VINYL BUTYRAL) POLYMER Non-Final OA SOLUTIA INC.
18868856 AEROBIC BIOLOGICAL WASTEWATER TREATMENT IN A CONTINUOUS FLOW REACTOR Non-Final OA HASKONINGDHV NEDERLAND B.V.

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