Prosecution Insights
Last updated: October 01, 2026

Examiner: VYAS, KEYUR ANILKUMAR

Tech Center 4100 • Art Units: 1600 1635 1637 1654 1682 4100

This examiner grants 49% of resolved cases

Analysis

Keyur Anilkumar Vyas works in Tech Center 4100 and Art Unit 1600. The examiner has 77 resolved cases. The allowance rate is 49.4 percent. This indicates a more challenging environment for applicants, as less than a majority of resolved cases result in a grant. Practitioners should be prepared for a detailed examination process when assigned to this examiner.

The interview lift is 60.8 percent. This significant lift suggests that interviews are a very effective way to improve the 49.4 percent allowance rate. Practitioners should prioritize interviews to advance their applications and resolve outstanding issues. The data indicates that direct communication in Art Unit 1600 is a powerful tool for overcoming rejections and reaching a grant.

The median days to allowance is 1349. This timeline is relatively long, reflecting the typical pendency for successful applications. With 77 resolved cases, the data provides a clear picture of the examiner's performance in Tech Center 4100. This timeframe is an important factor for applicants to consider when planning their patent strategy.

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

Performance Statistics

49.4%
Allow Rate
-10.6% vs TC avg
123
Total Applications
+60.8%
Interview Lift
1349
Avg Prosecution Days
Based on 77 resolved cases, 2023–2026

Rejection Statute Breakdown

5.2%
§101 Eligibility
17.0%
§102 Novelty
35.7%
§103 Obviousness
25.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17821806 Treatment Of Inflammatory Diseases With RAS Protein Activator Like 3 (RASAL3) Inhibitors Non-Final OA Regeneron Pharmaceuticals, Inc.
17078627 METHODS FOR TREATING PARKINSON'S DISEASE Final Rejection Korea Advanced Institute of Science and Technology
18501859 Methods and Compositions for Treating, Ameliorating, and/or Preventing Chronic Kidney Disease (CKD) and Complications thereof by Regulating DPEP1, CASP9, ACSS2 and/or FASN Non-Final OA THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
17047967 MITOCHONDRIAL RNA IMPORT FOR TREATING MITOCHONDRIAL DISEASE Final Rejection UNIVERSITY OF PITTSBURGH - OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
18581511 BETA-CATENIN (CTNNB1) iRNA COMPOSITIONS AND METHODS OF USE THEREOF Non-Final OA Alnylam Pharmaceuticals, Inc.
17773508 COMPOSITIONS AND METHODS FOR SILENCING DNAJB1-PRKACA FUSION GENE EXPRESSION Final Rejection ALNYLAM PHARMACEUTICALS, INC.
17260732 TREATMENT OF MUCOPOLYSACCHARIDOSIS I WITH FULLY-HUMAN GLYCOSYLATED HUMAN ALPHA-L-IDURONIDASE (IDUA) Non-Final OA REGENXBIO RS LLC
17055061 SUBSTITUTION OF THE MESSENGER RNA CAP WITH TWO RNA SEQUENCES INTRODUCED AT THE 5-PRIME END THEREOF Final Rejection MESSENGER BIOPHARMA

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