Prosecution Insights
Last updated: October 27, 2026

Phong Son H Dang, USPTO Patent Examiner

Listed by the USPTO as DANG, PHONG SON H

Tech Center 3700 • Art Units: 3731 3771 3773 3792

This examiner grants 78% of resolved cases

Analysis

DANG, PHONG SON H is a Tech Center 3700 examiner in Art Unit 3731 with 696 resolved cases. The allowance rate is 78.0%, and the median time to allowance is 1204 days. The record supports advance planning for a prosecution process with meaningful pendency and a substantial examination history.

The interview lift is 24.4%, reflecting a positive association with interviews. Practitioners may use interviews to clarify claim construction, discuss cited references, and make a later response more focused.

The listed companies are Integrity Medical Services Inc., P Tech LLC, and Olympus Corporation. OLIFF PLC, DUANE MORRIS LLP - Philadelphia, and Holland & Knight LLP are the listed firms.

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

Performance Statistics

78.0%
Allow Rate
+8.0% vs TC avg
717
Total Applications
+24.4%
Interview Lift
1204
Avg Prosecution Days
Based on 696 resolved cases, 2023–2026

Rejection Statute Breakdown

1.8%
§101 Eligibility
30.9%
§102 Novelty
44.2%
§103 Obviousness
18.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18943576 TISSUE FIXATION SYSTEM AND METHOD Non-Final OA P Tech, LLC
19037840 MEDICAL DEVICE, APPLICATOR, AND CLIP UNIT Non-Final OA OLYMPUS CORPORATION
19269488 MEDICAL DEVICE Non-Final OA ASAHI INTECC CO., LTD.
18632431 ROTATIONAL SYSTEMS COMPRISING A POLYMER DRIVESHAFT Final Rejection Cardiovascular Systems, Inc.

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Phong Son H Dang's allowance rate?

78.0% of resolved applications examined by Phong Son H Dang were allowed (696 resolved cases), compared with 63.1% across Art Unit 3731 over the last five years.

Does an interview help with examiner Phong Son H Dang?

This examiner's interview lift is +24.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Phong Son H Dang take to allow a patent?

Applications allowed by Phong Son H Dang took 1,204 days on average from filing to allowance.

Which art unit does examiner Phong Son H Dang work in?

Phong Son H Dang examines applications in Art Unit 3731 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month