Last updated: May 29, 2026

Examiner: CHEU, CHANGHWA J

Tech Center 1600 • Art Units: 1641 1645 1677 1678

This examiner grants 75% of resolved cases

Performance Statistics

74.6%

Allow Rate

+14.6% vs TC avg

1,202

Total Applications

+47.4%

Interview Lift

972

Avg Prosecution Days

Based on 1194 resolved cases, 2023–2026

5.4%

§101 Eligibility

11.8%

§102 Novelty

53.7%

§103 Obviousness

20.8%

§112 Clarity

App #	Title	Status	Assignee
18336644	FAST PROTEIN SEQUENCING	Non-Final OA	Regeneron Pharmaceuticals, Inc.
18500793	GLOBAL PROTEOMIC SCREENING OF RANDOM BEAD ARRAYS USING MASS SPECTROMETRY IMAGING	Non-Final OA	AmberGen, Inc.
18118432	DIAGNOSTIC METHODS FOR LIVER DISORDERS	Final Rejection	Meso Scale Technologies, LLC.
18040422	EX VIVO COLONIC BIOPSY PLATFORM TO EVALUATE MULTI-OMIC SIGNATURES FOR SCREENING CANDIDATE THERAPEUTICS	Non-Final OA	Athos Therapeutics, Inc.

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.