Prosecution Insights
Last updated: October 01, 2026

Examiner: LI, CHANGQING

Tech Center 1700 • Art Units: 1633 1791 1793

This examiner grants 29% of resolved cases

Analysis

Changqing Li is an examiner in Tech Center 1700, working within Art Unit 1633. The examiner has 314 resolved cases. This volume of work has resulted in an allowance rate pct of 29.3. For practitioners, this allowance rate pct serves as an indicator of the outcome frequency for applications assigned to this docket. The data also reveals an interview lift pct of 33.6. This interview lift pct suggests that conducting an interview is a strategy associated with an increased probability of allowance. Applications that reach a grant do so with a median days to allowance of 1339.

The 1339 median days to allowance provides a timeline for the patent acquisition process. By analyzing the 314 resolved cases, one can see the historical record of practice in Art Unit 1633. The 29.3 allowance rate pct and 33.6 interview lift pct provide metrics for evaluating the prosecution environment. These figures assist in the development of a strategy for patent applications. Understanding these data points is useful for managing expectations and resources during the examination phase.

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

Performance Statistics

29.3%
Allow Rate
-35.7% vs TC avg
391
Total Applications
+33.6%
Interview Lift
1339
Avg Prosecution Days
Based on 314 resolved cases, 2023–2026

Rejection Statute Breakdown

2.2%
§101 Eligibility
11.2%
§102 Novelty
53.2%
§103 Obviousness
28.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18722527 COAGULANT FOR PRODUCING BEAN CURD AND BEAN CURD PRODUCED USING THE SAME Final Rejection CJ CHEILJEDANG CORPORATION
18855014 PROCESS FOR TREATING PROTEIN-CONTAINING COMPOSITIONS Non-Final OA SOCIETE DES PRODUITS NESTLE S.A.
18390789 COMPOSITIONS AND METHODS FOR INHIBITING OXIDATION OF NATURAL OIL BASED COMPOSITION USING AMINOPHENOL ANTIOXIDANT Final Rejection Ecolab USA Inc.
17785171 ISOLATED OLEOSOME COMPOSITION AND PROCESS FOR PREPARING IT Final Rejection CARGILL, INCORPORATED
18580960 LACTOCOCCUS STRAINS Non-Final OA INTERNATIONAL N&H DENMARK APS
18859642 BREWING WITH THERMOSTABLE AMG VARIANTS Non-Final OA Novozymes A/S
18832784 HIGH OIL CONTENT OIL-IN-WATER TYPE EMULSIFIED OIL-AND-FAT COMPOSITION Non-Final OA FUJI OIL HOLDINGS INC.
18570054 MASKING FLAVORANT Non-Final OA FUJI OIL HOLDINGS INC.
18548811 VEGETABLE MOULDED CHEESE-LIKE FOOD PRODUCT Final Rejection FUJI OIL HOLDINGS INC.
18867926 FLAVOR NANOEMULSIONS FOR BEVERAGE AND PERSONAL CARE APPLICATIONS Non-Final OA FIRMENICH SA
18577834 BEVERAGE CONTAINING CITRUS FIBER AND PREPARATION METHOD THEREFOR Final Rejection THE COCA-COLA COMPANY
18254189 PROCESS FOR PRODUCING NON-DAIRY PROTEIN PREPARATION, AND PROTEIN PREPARATION Non-Final OA VALIO LTD
18254215 NON-DAIRY PROTEIN BASED EDIBLE PRODUCT AND, PROCESS FOR MANUFACTURING THE SAME Non-Final OA VALIO LTD

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