Listed by the USPTO as CHANG, THOMAS ZHU
Tech Center 3700 • Art Units: 3785
This examiner grants 52% of resolved cases
CHANG, THOMAS ZHU works in tech center 3700 and art unit 3785. The profile includes 23 resolved cases, a 52.2% allowance rate, and a median of 1326 days to allowance. The small case record limits broad inferences, while the allowance and pendency figures show that applications in the sample have not followed a short path to disposition.
The interview lift is 66.9%, the strongest interview association recorded in this profile. The listed companies are Samsung Electronics, RESMED, and Hamilton Medical. The leading firms are CHRISTENSEN O'CONNOR JOHNSON KINDNESS, NIXON & VANDERHYE, and Bayramoglu Law Offices. Given the limited sample, practitioners should examine each rejection closely and consider whether a well-prepared interview can clarify the claim distinctions.
| App # | Title | Status | Assignee |
|---|---|---|---|
| 18217007 | MASSAGE APPARATUS | Final Rejection | SAMSUNG ELECTRONICS CO., LTD. |
| 18078287 | WEARABLE DEVICE AND OPERATING METHOD THEREFOR | Non-Final OA | SAMSUNG ELECTRONICS CO., LTD. |
| 18443274 | CPR ASSISTANCE SYSTEMS | Non-Final OA | Stryker Corporation |
| 17926567 | APPARATUS, SYSTEMS AND METHODS FOR POSITIONING AND STABILISING A PATIENT INTERFACE | Final Rejection | RESMED PTY LTD |
| 17768771 | SENSOR ASSEMBLY FOR RESPIRATORY APPARATUS | Non-Final OA | ResMed Pty Ltd |
| 18267321 | WEARABLE AIR PURIFIER | Non-Final OA | Dyson Technology Limited |
| 19402604 | WEARABLE DEVICES FOR VIBRATORY STIMULATION TO REDUCE TREMOR | Non-Final OA | Cala Health, Inc. |
| 17682816 | SYSTEMS AND METHODS FOR DETECTING USAGE INFORMATION FOR A SENSOR | Final Rejection | GE Precision Healthcare LLC |
| 18466702 | MASSAGE DEVICE HAVING VARIABLE STROKE LENGTH | Final Rejection | HYPERICE IP SUBCO, LLC |
IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.
Build Your Strategy52.2% of resolved applications examined by Thomas Zhu Chang were allowed (23 resolved cases), compared with 55.8% across Art Unit 3785 over the last five years.
This examiner's interview lift is +66.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.
Applications allowed by Thomas Zhu Chang took 1,326 days on average from filing to allowance.
Thomas Zhu Chang examines applications in Art Unit 3785 in Tech Center 3700 (Medical Devices & Mechanical Engineering).
