Listed by the USPTO as EREZO, DARWIN P
Tech Center 3700 • Art Units: 3731 3734 3771 3773
This examiner grants 55% of resolved cases
Darwin P. Erezo, an examiner in Tech Center 3700 and Art Unit 3731, has handled 294 resolved cases. His allowance rate is 54.8%, but he shows a strong interview lift of 28.8%. This suggests that while the initial examination may be challenging, interviews are a very effective way to reach an allowance. The median days to allowance is 1841, which is a notably long duration for prosecution.
Top applicants include The Regents of the University of California and Microvention Inc. Firms such as Inskeep Intellectual Property Group, Inc. and NGUYEN TARBET IP Law are frequently active in his art unit. Given the 54.8% allowance rate and the 1841-day median timeline, practitioners should be prepared for a long process. However, the 28.8% interview lift offers a significant strategic advantage for those willing to engage in direct discussion with the examiner.
| App # | Title | Status | Assignee |
|---|---|---|---|
| 18896702 | MAGNETIC STENT SYSTEM FOR PREVENTION OF STENT MIGRATION | Non-Final OA | THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
| 18561684 | Vascular Prosthesis With Drawn Filled Tubes | Final Rejection | MicroVention, Inc. |
IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.
Build Your Strategy54.8% of resolved applications examined by Darwin P Erezo were allowed (294 resolved cases), compared with 63.1% across Art Unit 3731 over the last five years.
This examiner's interview lift is +28.8 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.
Applications allowed by Darwin P Erezo took 1,841 days on average from filing to allowance.
Darwin P Erezo examines applications in Art Unit 3731 in Tech Center 3700 (Medical Devices & Mechanical Engineering).
