Prosecution Insights
Last updated: October 27, 2026

Yong D Pak, USPTO Patent Examiner

Listed by the USPTO as PAK, YONG D

Tech Center 1600 • Art Units: 1645 1652 1683

This examiner grants 75% of resolved cases

Analysis

Yong D. Pak works in Tech Center 1600 and art unit 1645. His record contains 955 resolved cases, with a 74.7% allowance rate and a median of 1051 days to allowance. The case volume supports a useful assessment of the examiner’s recorded outcomes, while the median indicates that prosecution may extend beyond a single response cycle.

The interview lift is 14.2%, indicating a modest recorded association with allowance outcomes. The leading companies are Novozymes A/S, Wisconsin Alumni Research Foundation, and The Regents of the University of California. The leading firms are Kilpatrick Townsend & Stockton LLP - West Coast, Morgan, Lewis & Bockius LLP (WA), and ALSTON & BIRD LLP. Counsel may balance detailed written claim work with selective interview use.

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

Performance Statistics

74.7%
Allow Rate
+14.7% vs TC avg
1,014
Total Applications
+14.2%
Interview Lift
1051
Avg Prosecution Days
Based on 955 resolved cases, 2023–2026

Rejection Statute Breakdown

6.8%
§101 Eligibility
19.0%
§102 Novelty
22.7%
§103 Obviousness
32.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
16971209 A MICROORGANISM PRODUCING A MYCOSPORINE-LIKE AMINO ACID AND A METHOD FOR PRODUCING A MYCOSPORINE-LIKE AMINO ACID USING THE SAME Non-Final OA CJ CHEILJEDANG CORPORATION
17780088 Fungus Strain Having Decreased Viscosity Final Rejection IFP Energies Nouvelles
18960980 SYSTEMS, COMPOSITIONS AND METHODS FOR IDENTIFYING E3 LIGASE SUBSTRATES BY UBIQUITIN BIOTINYLATION Non-Final OA Dana-Farber Cancer Institute, Inc.
18891498 MICROORGANISMS AND METHODS FOR PRODUCING CIS,CIS-MUCONIC ACID Non-Final OA Wisconsin Alumni Research Foundation
18737647 RECOMBINANT MICROORGANISMS THAT CATABOLIZE LIGNIN AROMATICS AND METHODS OF USING SAME Non-Final OA Wisconsin Alumni Research Foundation
18672924 MICROBES AND METHODS FOR SELECTIVE DETOXIFICATION OF LIGNOCELLULOSIC BIOMASS Non-Final OA Wisconsin Alumni Research Foundation
18837131 NOVEL LIPID PEROXIDATION SYSTEM AND METHOD FOR PREPARING BIOFUEL AND BIOPOLYMER USING SAME Non-Final OA KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
18730984 COMPOSITIONS AND METHODS FOR TREATING HEART FAILURE Final Rejection The Regents of the University of California
18644618 METHODS AND COMPOSITIONS USEFUL FOR THE PRODUCTION OF OLEFINIC ESTER Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18870994 ANTIVIRAL AGENT, PHARMACEUTICAL COMPOSITION FOR TREATING OR PREVENTING VIRAL INFECTION, KIT FOR EVALUATING RISK OF VIRAL INFECTION BECOMING SEVERE, AND METHOD FOR EVALUATING RISK OF VIRAL INFECTION BECOMING SEVERE Non-Final OA TOHOKU UNIVERSITY
18023946 ENZYME DEHYDROXYLATING HYDROXYL GROUP AT 9-POSITION OF UROLITHIN COMPOUND Non-Final OA DAICEL CORPORATION
18355776 METHODS FOR THE IMPROVEMENT OF PRODUCT YIELD AND PRODUCTION IN A MICROORGANISM THROUGH GLYCEROL RECYCLING Non-Final OA DANSTAR FERMENT AG
18822802 POLYPEPTIDES Non-Final OA Novozymes A/S
18570301 METHOD FOR CONTROLLING SLIME IN A PULP OR PAPER MAKING PROCESS Final Rejection Novozymes A/S
18043532 PROTEASE VARIANTS WITH IMPROVED SOLUBILITY Final Rejection Novozymes A/S
18042282 VARIANTS OF A FAMILY 44 XYLOGLUCANASE Non-Final OA Novozymes A/S
18880021 IMPROVED DOWNREGULATION OF HISTONE CYTOTOXICITY BY COMPLEX OF NEGATIVELY CHARGED POLYSACCHARIDE AND PROTEASE Non-Final OA ACADEMISCH ZIEKENHUIS MAASTRICHT

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Frequently Asked Questions

What is examiner Yong D Pak's allowance rate?

74.7% of resolved applications examined by Yong D Pak were allowed (955 resolved cases), compared with 49.5% across Art Unit 1645 over the last five years.

Does an interview help with examiner Yong D Pak?

This examiner's interview lift is +14.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Yong D Pak take to allow a patent?

Applications allowed by Yong D Pak took 1,051 days on average from filing to allowance.

Which art unit does examiner Yong D Pak work in?

Yong D Pak examines applications in Art Unit 1645 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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