Prosecution Insights
Last updated: October 27, 2026

Mary Chang Leverett, USPTO Patent Examiner

Listed by the USPTO as LEVERETT, MARY CHANG

Tech Center 2100 • Art Units: 1672 1681 1682 1687 1794 2123

This examiner grants 59% of resolved cases

Analysis

LEVERETT, MARY CHANG is a USPTO patent examiner in Tech Center 2100 and Art Unit 1672. The profile covers 101 resolved cases, with an allowance rate of 59.4% and a median of 1518 days to allowance. Interviews are associated with a 23.5% lift, making interview preparation a potentially useful prosecution consideration in this docket.

The principal companies represented include 10x Genomics Inc., Monsanto Technology LLC, and JVCKENWOOD Corporation. The leading firms are AMIN, TUROCY & WATSON, LLP, BALLARD SPAHR LLP, and DLA Piper LLP (US) Boston. Applicants in this profile may benefit from reviewing interview practice alongside claim strategy, particularly where prosecution timing is important.

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

Performance Statistics

59.4%
Allow Rate
+4.4% vs TC avg
132
Total Applications
+23.5%
Interview Lift
1518
Avg Prosecution Days
Based on 101 resolved cases, 2023–2026

Rejection Statute Breakdown

40.2%
§101 Eligibility
8.4%
§102 Novelty
27.8%
§103 Obviousness
19.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17898240 SYSTEMS AND METHODS FOR IDENTIFYING ADAPTIVE IMMUNE CELL CLONOTYPES Non-Final OA 10x Genomics, Inc.
18358001 GENE MODEL FOR JUDGING PROGNOSIS OF HEPATOCELLULAR CARCINOMA PATIENTS, CONSTRUCTION METHOD AND USE THEREOF Non-Final OA ZHEJIANG UNIVERSITY
18069110 OFF-TARGET PREDICTION METHOD FOR ANTIGEN-RECOGNITION MOLECULES BINDING TO MHC-PEPTIDE TARGETS Non-Final OA Regeneron Pharmaceuticals, Inc.
18281085 METHODS FOR RECONSTITUTING T CELL SELECTION AND USES THEREOF Non-Final OA THE BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM
18134518 Methods And Systems For Identifying Hybrids For Use In Plant Breeding Non-Final OA Monsanto Technology LLC
17995525 METHOD FOR IDENTIFYING SIGNATURES FOR PREDICTING TREATMENT RESPONSE Non-Final OA UMC Utrecht Holding B.V.
17899470 SYSTEMS AND METHODS FOR CLASSIFYING AND TREATING HOMOLOGOUS REPAIR DEFICIENCY CANCERS Final Rejection Foundation Medicine, Inc.
18174468 CALIBRATION SEQUENCES FOR NUCLEOTIDE SEQUENCING Non-Final OA Illumina, Inc.
18080620 METHODS AND PROCESSES FOR NON-INVASIVE ASSESSMENT OF GENETIC VARIATIONS Non-Final OA SEQUENOM, INC.

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Frequently Asked Questions

What is examiner Mary Chang Leverett's allowance rate?

59.4% of resolved applications examined by Mary Chang Leverett were allowed (101 resolved cases), compared with 38.3% across Art Unit 1672 over the last five years.

Does an interview help with examiner Mary Chang Leverett?

This examiner's interview lift is +23.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Mary Chang Leverett take to allow a patent?

Applications allowed by Mary Chang Leverett took 1,518 days on average from filing to allowance.

Which art unit does examiner Mary Chang Leverett work in?

Mary Chang Leverett examines applications in Art Unit 1672 in Tech Center 2100 (Computing & Software).

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