Prosecution Insights
Last updated: October 26, 2026

Justin Xu, USPTO Patent Examiner

Listed by the USPTO as XU, JUSTIN

Tech Center 3700 • Art Units: 3774 3783 3791

This examiner grants 61% of resolved cases

Analysis

XU, JUSTIN works in tech center 3700 and art unit 3774. The profile includes 239 resolved cases and a 60.7% allowance rate. The median time to allowance is 1352 days, indicating that applicants should budget for extended prosecution and maintain flexibility in claim amendments.

The interview lift is 35.8%, giving interviews a meaningful role in addressing examiner concerns. The leading companies are Orthosensor Inc., Samsung Display Co., Ltd., and i-SENS Inc. The leading firms are Lerner David LLP, F. CHAU & ASSOCIATES, LLC, and STERNE, KESSLER, GOLDSTEIN & FOX P.L.L.C.

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

Performance Statistics

60.7%
Allow Rate
-9.3% vs TC avg
290
Total Applications
+35.8%
Interview Lift
1352
Avg Prosecution Days
Based on 239 resolved cases, 2023–2026

Rejection Statute Breakdown

13.8%
§101 Eligibility
14.5%
§102 Novelty
47.4%
§103 Obviousness
20.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18818485 AMBIENT NOISE MONITORING FOR HEARING TEST Non-Final OA Apple Inc.
18925392 DEVICE FOR SENSING BIOMETRIC INFORMATION Non-Final OA SAMSUNG DISPLAY CO., LTD.
18686642 MUSCLE CONDITION ESTIMATION DEVICE AND METHOD FOR ESTIMATING MUSCLE CONDITION Non-Final OA NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
17326505 ARTIFICIAL INTELLIGENCE BASED SYSTEMS AND METHODS FOR ANALYZING USER-SPECIFIC SKIN OR HAIR DATA TO PREDICT USER-SPECIFIC SKIN OR HAIR CONDITIONS Final Rejection The Procter & Gamble Company
18678554 APPARATUS AND METHOD FOR DETECTING VISUAL STIMULUS BASED ON SSVEP Non-Final OA Kia Corporation
17635605 SYSTEMS AND METHODS FOR DETERMINING AND TRACKING RANGE OF MOTION OF A JOINTED LIMB Non-Final OA Solventum Intellectual Properties Company
18823762 BLOOD PRESSURE ESTIMATION METHOD AND BIOLOGICAL INFORMATION MEASUREMENT SYSTEM Non-Final OA Murata Manufacturing Co., Ltd.
18927618 ELECTRONIC DEVICE AND ESTIMATION SYSTEM Non-Final OA KYOCERA Corporation
18282742 CIRCULATING BLOOD VOLUME DETERMINATION APPARATUS, CIRCULATING BLOOD VOLUME DETERMINATION PROGRAM, AND CIRCULATING BLOOD VOLUME DETERMINATION METHOD Non-Final OA NIHON KOHDEN CORPORATION

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Frequently Asked Questions

What is examiner Justin Xu's allowance rate?

60.7% of resolved applications examined by Justin Xu were allowed (239 resolved cases), compared with 61.7% across Art Unit 3774 over the last five years.

Does an interview help with examiner Justin Xu?

This examiner's interview lift is +35.8 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Justin Xu take to allow a patent?

Applications allowed by Justin Xu took 1,352 days on average from filing to allowance.

Which art unit does examiner Justin Xu work in?

Justin Xu examines applications in Art Unit 3774 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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