Prosecution Insights
Last updated: October 02, 2026

Examiner: WANG, CHANG YU

Tech Center 1600 • Art Units: 1643 1649 1658 1675

This examiner grants 34% of resolved cases

Analysis

Chang Yu Wang is an examiner in Art Unit 1643 within Tech Center 1600. The examiner has handled 872 resolved cases with an allowance rate pct of 33.5. This low rate indicates a challenging environment for patent applicants in the biotechnology sector.

The interview lift pct of 53.5 is a critical metric for this examiner. It suggests that despite the low 33.5% allowance rate, interviews can dramatically improve the chances of success. This high lift highlights the importance of verbal advocacy in this unit.

The median days to allowance is 1421. This long duration reflects the complexity of cases in Tech Center 1600. With 872 resolved cases, the data provides a comprehensive look at the examiner's rigorous standards and the potential for interviews to mitigate them.

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

Performance Statistics

33.5%
Allow Rate
-26.5% vs TC avg
951
Total Applications
+53.5%
Interview Lift
1421
Avg Prosecution Days
Based on 872 resolved cases, 2023–2026

Rejection Statute Breakdown

4.7%
§101 Eligibility
15.0%
§102 Novelty
27.2%
§103 Obviousness
35.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17762543 VACCINE THERAPY FOR RAN PROTEIN DISEASES Non-Final OA University of Florida Research Foundation, Incorporated
18455205 MICROENCAPSULATED AND CHROMOSOME INTEGRATED COMPOSITIONS FOR L-DOPA MICROBIOME THERAPY Non-Final OA Iowa State University Research Foundation, Inc.
17304444 MICROENCAPSULATED AND CHROMOSOME INTEGRATED COMPOSITIONS FOR L-DOPA MICROBIOME THERAPY Non-Final OA Iowa State University Research Foundation, Inc.
17790340 LOOPED PROTEINS COMPRISING CELL PENETRATING PEPTIDES Final Rejection Ohio State Innovation Foundation
17883072 Anti-CGRP Antibody Formulation Non-Final OA Eli Lilly and Company
17801776 METHODS OF USE OF ANTI-TREM2 ANTIBODIES Non-Final OA Washington University
17816067 AMELIORATION AND TREATMENT OF BRAIN DISORDER RESULTING FROM FETAL GROWTH RETARDATION USING PLURIPOTENT STEM CELLS Non-Final OA TOHOKU UNIVERSITY
18560791 CHIMERIC ANTIGEN RECEPTOR TO TARGET HLA-G-POSITIVE CANCERS Non-Final OA BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
17995820 OFATUMUMAB FOR TREATING MS WHILE MAINTAINING SERUM IgG Final Rejection NOVARTIS AG
17753635 Management of conditions other than multiple sclerosis in ofatumumab-treated patients Final Rejection Novartis AG
18636898 REGENERATING FUNCTIONAL NEURONS FOR TREATMENT OF HEMORRHAGIC STROKE Non-Final OA THE PENN STATE RESEARCH FOUNDATION
17793355 CHIMERIC ANTIGEN RECEPTORS FOR REMOVAL OF AMYLOID Non-Final OA University of Tennessee Research Foundation
18627010 BLOOD-BASED ASSAY FOR DETECTING TAUOPATHY OR AMYLOIDOGENIC DISEASE Non-Final OA Janssen Pharmaceutica NV
17437968 METHOD FOR SCREENING COMPOUND FOR TREATING OR PREVENTING POLYQ-RELATED NEURODEGENERATIVE DISEASES Non-Final OA FUDAN UNIVERSITY
18147287 METHODS OF TREATING NEUROMYELITIS OPTICA SPECTRUM DISORDER Non-Final OA Viela Bio, Inc.
17261480 THERAPEUTIC OR PROPHYLACTIC AGENT FOR HTLV-1-ASSOCIATED MYELOPATHY (HAM), AND METHOD FOR TREATING HAM Non-Final OA ST. MARIANNA UNIVERSITY SCHOOL OF MEDICINE

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