Prosecution Insights
Last updated: October 26, 2026

Haejin S Park, USPTO Patent Examiner

Listed by the USPTO as PARK, HAEJIN S

Tech Center 1600 • Art Units: 1611 1614 1615 1628 1641

This examiner grants 55% of resolved cases

Analysis

This record includes 739 resolved cases in Tech Center 1600 and Art Unit 1611. The allowance rate is 55.1%, with a median of 1125 days to allowance. Interview lift is 38.3%, indicating a substantial positive association that makes interviews a relevant part of response planning.

The listed companies are Collagen Matrix Inc., Rochal Technologies LLC, and The University of North Carolina at Chapel Hill. The listed firms are FINNEGAN, HENDERSON, FARABOW, GARRETT & DUNNER, Knobbe, Martens, Olson & Bear, LLP, and SHUMAKER & SIEFFERT, P. A. Practitioners should combine interview preparation with robust written claim positions.

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

Performance Statistics

55.1%
Allow Rate
-4.9% vs TC avg
792
Total Applications
+38.3%
Interview Lift
1125
Avg Prosecution Days
Based on 739 resolved cases, 2023–2026

Rejection Statute Breakdown

2.0%
§101 Eligibility
13.1%
§102 Novelty
41.3%
§103 Obviousness
23.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18239036 PATCH GRAFT COMPOSITIONS FOR CELL ENGRAFTMENT Final Rejection The University of North Carolina at Chapel Hill
19353408 PARTICLE-FORM HYBRID-SCALE FIBER MATRIX Non-Final OA Solventum Intellectual Properties Company
19353396 PARTICLE-FORM HYBRID-SCALE FIBER MATRIX Non-Final OA Solventum Intellectual Properties Company
19353328 PARTICLE-FORM HYBRID-SCALE FIBER MATRIX Non-Final OA Solventum Intellectual Properties Company
18695440 COMPOSITIONS FOR USE Final Rejection SOCIETE DES PRODUITS NESTLE S.A.
18954372 EARLY LIFE NUTRITION Non-Final OA DSM IP Assets B.V.
18713382 METAL COMPLEXED CYANURATE GERMICIDAL ADDITIVE FOR POLYMER COMPOSITIONS Non-Final OA SABIC Global Technologies B.V.
18857684 EMULSION WITH LIQUID CRYSTALLINE STRUCTURES Non-Final OA BEIERSDORF AG

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Frequently Asked Questions

What is examiner Haejin S Park's allowance rate?

55.1% of resolved applications examined by Haejin S Park were allowed (739 resolved cases), compared with 35.0% across Art Unit 1611 over the last five years.

Does an interview help with examiner Haejin S Park?

This examiner's interview lift is +38.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Haejin S Park take to allow a patent?

Applications allowed by Haejin S Park took 1,125 days on average from filing to allowance.

Which art unit does examiner Haejin S Park work in?

Haejin S Park examines applications in Art Unit 1611 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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