Prosecution Insights
Last updated: October 02, 2026

Examiner: LEVERETT, MARY CHANG

Tech Center 2100 • Art Units: 1672 1681 1682 1687 2123

This examiner grants 60% of resolved cases

Analysis

Mary Chang Leverett serves in Tech Center 2100 and Art Unit 1672. She has 97 resolved cases, resulting in an allowance rate of 60.8 percent. This 60.8 percent rate indicates that more than six out of ten applications in her docket reach issuance. For practitioners, this figure suggests a moderate level of examination difficulty. The 97 resolved cases provide a solid basis for analyzing her prosecution patterns in Tech Center 2100.

The interview lift is 23.8 percent, indicating that interviews are a helpful strategy for advancing cases toward allowance. This 23.8 percent increase in success probability suggests that she is receptive to verbal advocacy. The median days to allowance is 1520. This 1520-day timeline is quite long, suggesting that practitioners should be prepared for a prosecution cycle that lasts over four years on average. Applicants should use the 1520-day figure to manage client expectations and consider the 23.8 percent lift as a valuable tool for overcoming rejections. The combination of a 60.8 percent allowance rate and a 1520-day median indicates that while success is likely, it requires persistent effort over a long period.

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

Performance Statistics

60.2%
Allow Rate
+5.2% vs TC avg
117
Total Applications
+20.8%
Interview Lift
1515
Avg Prosecution Days
Based on 98 resolved cases, 2023–2026

Rejection Statute Breakdown

39.6%
§101 Eligibility
8.6%
§102 Novelty
27.9%
§103 Obviousness
18.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17898240 SYSTEMS AND METHODS FOR IDENTIFYING ADAPTIVE IMMUNE CELL CLONOTYPES Non-Final OA 10x Genomics, Inc.
17610788 ASSESSMENT OF MULTIPLE SIGNALING PATHWAY ACTIVITY SCORE IN AIRWAY EPITHELIAL CELLS TO PREDICT AIRWAY EPITHELIAL ABNORMALITY AND AIRWAY CANCER RISK Non-Final OA KONINKLIJKE PHILIPS N.V.
18134518 Methods And Systems For Identifying Hybrids For Use In Plant Breeding Non-Final OA Monsanto Technology LLC
18470568 METHOD AND SYSTEM FOR IDENTIFYING CANDIDATE GENOME SEQUECNCES BY ESTIMATING COVERAGE Non-Final OA Tata Consultancy Services Limited
18069110 OFF-TARGET PREDICTION METHOD FOR ANTIGEN-RECOGNITION MOLECULES BINDING TO MHC-PEPTIDE TARGETS Non-Final OA Regeneron Pharmaceuticals, Inc.
18358001 GENE MODEL FOR JUDGING PROGNOSIS OF HEPATOCELLULAR CARCINOMA PATIENTS, CONSTRUCTION METHOD AND USE THEREOF Non-Final OA ZHEJIANG UNIVERSITY
18281085 METHODS FOR RECONSTITUTING T CELL SELECTION AND USES THEREOF Non-Final OA THE BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM
18451739 DETERMINING A DYNAMIC QUALITY METRIC OF A BIOPSY SAMPLE Non-Final OA GUARDANT HEALTH, INC.
17995525 METHOD FOR IDENTIFYING SIGNATURES FOR PREDICTING TREATMENT RESPONSE Non-Final OA UMC Utrecht Holding B.V.
17876065 SYSTEM AND METHOD FOR CONTROLLING CELL FUNCTIONING AND MOTILITY WITH THE AID OF A DIGITAL COMPUTER Non-Final OA XEROX CORPORATION
17904675 METHOD AND SYSTEM FOR ADVERSARY RESILIENT SCREENING OF SYNTHETIC GENE ORDERS Final Rejection B.G. NEGEV TECHNOLOGIES AND APPLICATIONS LTD., AT BEN-GURION UNIVERSITY
18174468 CALIBRATION SEQUENCES FOR NUCLEOTIDE SEQUENCING Non-Final OA Illumina, Inc.
17046829 CLASSIFICATION AND PROGNOSIS OF PROSTATE CANCER Final Rejection UEA ENTERPRISES LIMITED
18080620 METHODS AND PROCESSES FOR NON-INVASIVE ASSESSMENT OF GENETIC VARIATIONS Non-Final OA SEQUENOM, INC.
17884498 METHODS AND SYSTEMS FOR TUMOR DETECTION Non-Final OA GRAIL, Inc.

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