Prosecution Insights
Last updated: October 02, 2026

Examiner: YU, TIAN NMN

Tech Center 1600 • Art Units: 1634 1637 1656 1681 1682 1699

This examiner grants 55% of resolved cases

Analysis

Tian Nmn Yu has resolved 89 cases within Art Unit 1634 of Technology Center 1600. The examiner has an allowance rate of 55.1 percent, showing the distribution between grants and abandonments. The median days to allowance is 1399, which provides a benchmark for the duration of the prosecution phase. The interview lift of 20.4 percent indicates that verbal discussions are a method for overcoming rejections.

For applicants in the 1600 tech center, this lift suggests that the examiner is receptive to technical arguments presented during interviews. Strategic use of interviews may help navigate the 1399-day path to a patent grant. With 89 cases resolved, the data provides a look at the examiner's habits. The 55.1 percent allowance rate suggests that success is achievable through diligent prosecution. The 20.4 percent lift is a tool for practitioners to consider when planning their strategy for this specific art unit.

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

Performance Statistics

55.1%
Allow Rate
-4.9% vs TC avg
151
Total Applications
+20.4%
Interview Lift
1399
Avg Prosecution Days
Based on 89 resolved cases, 2023–2026

Rejection Statute Breakdown

10.4%
§101 Eligibility
18.2%
§102 Novelty
31.6%
§103 Obviousness
29.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19449295 DETECTING MUTATIONS AND PLOIDY IN CHROMOSOMAL SEGMENTS Non-Final OA Natera, Inc.
18038454 GRAPHENE-BASED BIOSENSOR AND DETECTION METHOD USING SAME Non-Final OA KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
17260611 POLYNUCLEOTIDE SYNTHESIS METHOD, KIT AND SYSTEM Final Rejection Oxford Nanopore Technologies PLC
18718585 Single-Cell Epigenomic Profiling Using Droplet Fluidics and Hydrogels Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18169681 EFFICIENT SCREENING LIBRARY PREPARATION Non-Final OA The Regents of the University of California
17625687 LIPID-MODIFIED OLIGONUCLEOTIDES AND METHODS OF USING THE SAME Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18631875 COMPOSITIONS AND METHODS FOR HLA HAPLOTYPE SEQUENCING Non-Final OA ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY
18704416 MANIPULATING AND DETECTING BIOLOGICAL SAMPLES Non-Final OA Singular Genomics Systems, Inc.
17531488 CONTACTLESS DETECTION OF AN ABERRANT CONDITION Non-Final OA Singular Genomics Systems, Inc.
18677551 ANALYSIS METHOD Non-Final OA Denso Corporation
18275797 MICRO RNA LIVER CANCER MARKERS AND USES THEREOF Non-Final OA THE CLEVELAND CLINIC FOUNDATION
17373653 cDNA SPIKE-IN CONTROL FOR SINGLE CELL ANALYSIS Non-Final OA Becton, Dickinson and Company
18620056 METHODS FOR EARLY DETECTION OF CANCER Non-Final OA GUARDANT HEALTH, INC.
18325759 COMPOSITIONS AND METHODS FOR ENRICHING METHYLATED POLYNUCLEOTIDES Final Rejection GUARDANT HEALTH, INC.
17619154 METHOD FOR DIAGNOSIS OF EARLY AGEING OF THE SKIN Non-Final OA L'OREAL
18361763 METHOD OF DETECTING MULTIPLE FORMS OF AN ANALYTE Final Rejection GEN-PROBE INCORPORATED
17928452 USE OF MICROVESICLE SIGNATURE FOR THE DIAGNOSIS AND TREATMENT OF KIDNEY TRANSPLANT REJECTION Non-Final OA The Brigham and Women's Hospital, Inc.
17651135 SINGLE TUBE PREPARATION OF DNA AND RNA FOR SEQUENCING Non-Final OA Roche Sequencing Solutions, Inc.
18570947 NUCLEIC ACID NANOPORE WITH ENHANCED SENSING FUNCTIONALITY Non-Final OA UCL BUSINESS LTD
18570381 DETECTION OF MULTIPLE TARGET NUCLEIC ACID USING MULTIPLE DETECTION TEMPERATURES Non-Final OA SEEGENE, INC.
18515013 REVERSIBLY CROSS-LINKED HYDROGELS, AND METHODS OF USING THE SAME FOR CLUSTER AMPLIFICATION Final Rejection Illumina, Inc.
18606513 COMPOSITION OF TRANSFER RNAS AND USE IN PRODUCTION OF PROTEINS CONTAINING NON-STANDARD AMINO ACIDS Non-Final OA Absci Corporation
17240865 EXPONENTIAL BASE-3 AND GREATER NUCLEIC ACID AMPLIFICATION WITH CYCLING PROBE Non-Final OA Cepheid
18000615 MULTI-SENSING OF NUCLEIC ACID AND SMALL MOLECULE MARKERS Non-Final OA LogicInk Corporation

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