Prosecution Insights
Last updated: April 19, 2026

Examiner: DAHLE, CHUN WU

Tech Center 1600 • Art Units: 1641 1644

This examiner grants 50% of resolved cases

Performance Statistics

49.8%
Allow Rate
-10.2% vs TC avg
685
Total Applications
+51.7%
Interview Lift
1492
Avg Prosecution Days
Based on 646 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
16.1%
§102 Novelty
26.1%
§103 Obviousness
11.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18744537 Fc VARIANTS WITH ALTERED BINDING TO FcRn Non-Final OA Xencor, Inc.
18456317 OPTIMIZED Fc VARIANTS Non-Final OA Xencor, Inc.
18195588 CD16high CD57high NK-92MI Cells Final Rejection ImmunityBio, Inc.
19238328 ENGINEERED BISPECIFIC MOLECULES AND METHODS OF USE Final Rejection Cantai Therapeutics Inc.
18249708 INJECTABLE HYDROGELS FOR ADOPTIVE CELL THERAPY Non-Final OA The Board of Trustees of the Leland Stanford Junior University
17997171 TREATMENT AND PREVENTION OF ALLOREACTIVITY USING VIRUS-SPECIFIC IMMUNE CELLS EXPRESSING CHIMERIC ANTIGEN RECEPTORS Non-Final OA Baylor College of Medicine
18035894 ANTIBODY-BASED CONJUGATE FOR ENHANCING THERAPEUTIC EFFECT OF TARGETED THERAPEUTIC AGENT Non-Final OA THE CATHOLIC UNIVERSITY OF KOREA INDUSTRY-ACADEMIC COOPERATION FOUNDATION
17615949 ANTI-TNF ANTIBODY COMPOSITIONS, AND METHODS FOR THE TREATMENT OF PSORIATIC ARTHRITIS Final Rejection Janssen Biotech, Inc.
17846672 Fc-gamma-RIIb-SPECIFIC Fc ANTIBODY Final Rejection Chugai Seiyaku Kabushiki Kaisha
17271239 ANTIBODY HALF-MOLECULE, AND METHOD FOR INHIBITING HOMODIMER FORMATION OF ANTIBODY HALF-MOLECULE Final Rejection Chugai Seiyaku Kabushiki Kaisha
17880358 IMMUNOGLOBULIN FC CONJUGATE WHICH MAINTAINS BINDING AFFINITY OF IMMUNOGLOBULIN FC FRAGMENT TO FCRN Final Rejection HANMI PHARM. CO., LTD.
17349482 POTENCY ASSAYS FOR ANTIBODY DRUG SUBSTANCE BINDING TO AN FC RECEPTOR Final Rejection GENMAB A/S
18016436 SERUM STABLE BINDING PROTEINS FOR HUMAN HER2 FOR THERANOSTIC APPLICATIONS Non-Final OA Navigo Proteins GmbH
18100885 HUMANIZED ANTI-COMPLEMENT FACTOR C1Q ANTIBODIES AND USES THEREOF Non-Final OA Annexon, Inc.
18303303 USE OF AN ANTI-CD19 ANTIBODY TO TREAT AUTOIMMUNE DISEASE Non-Final OA Viela Bio, Inc.
18245959 COMPOUND FOR THE SEQUESTRATION OF UNDESIRABLE ANTIBODIES IN A PATIENT Non-Final OA ABLEVIA BIOTECH GMBH
18162308 FUSION PROTEINS OF HUMAN PROTEIN FRAGMENTS TO CREATE ORDERLY MULTIMERIZED IMMUNOGLOBULIN FC COMPOSITIONS WITH ENHANCED FC RECEPTOR BINDING Non-Final OA Gliknik Inc.
18061755 COMPOSITIONS FOR INCREASING HALF-LIFE OF A THERAPEUTIC AGENT IN CANINES AND METHODS OF USE Non-Final OA Invetx, Inc.
17908640 ENHANCED EXPRESSION YIELD OF IMMUNOGLOBULIN A IN EUKARYOTES Non-Final OA ExpressTec LLC
17745667 POLYPEPTIDE VARIANTS AND USES THEREOF Final Rejection GENMAB B.V.
17684238 ANTI-DEATH RECEPTOR ANTIBODIES AND METHODS OF USE THEREOF Final Rejection GENMAB B.V.
17800630 MODIFIED FC REGIONS Non-Final OA adivo GmbH
17622333 ANTIBODIES FOR BINDING PSMA WITH REDUCED AFFINITY FOR THE NEONATAL FC RECEPTOR Final Rejection Telix Pharmaceuticals (Innovations) Pty Ltd
16772244 VARIANTS WITH FC FRAGMENT HAVING AN INCREASED AFFINITY FOR FCRN AND AN INCREASED AFFINITY FOR AT LEAST ONE RECEPTOR OF THE FC FRAGMENT Final Rejection LABORATOIRE FRANÇAIS DU FRACTIONNEMENT ET DES BIOTECHNOLOGIES
16317987 BISPECIFIC PROTEINS AND METHODS FOR PREPARING SAME Non-Final OA Ibentrus, Inc.

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