Prosecution Insights
Last updated: October 27, 2026

Jianjian Zhu, USPTO Patent Examiner

Listed by the USPTO as ZHU, JIANJIAN

Tech Center 1600 • Art Units: 1631 1632 1635 1699

This examiner grants 58% of resolved cases

Analysis

ZHU, JIANJIAN is assigned to Tech Center 1600 and Art Unit 1631. The record contains 86 resolved cases and an allowance rate of 58.1%. The median time to allowance is 1353 days, so applicants should plan for extended prosecution and preserve flexibility around related filings.

The interview lift is 82.5%, the strongest stated association in this profile. A practitioner may therefore give substantial attention to interview preparation, including a precise explanation of claim scope and the proposed response to each outstanding issue. The represented organizations are Fate Therapeutics Inc., Lung Biotechnology Pbc, and The Board of Trustees of the Leland Stanford Junior University. The listed firms are Foley & Lardner LLP, WOLF GREENFIELD & SACKS, P.C., and Arnold & Porter Kaye Scholer LLP.

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

Performance Statistics

58.1%
Allow Rate
-1.9% vs TC avg
172
Total Applications
+82.5%
Interview Lift
1353
Avg Prosecution Days
Based on 86 resolved cases, 2023–2026

Rejection Statute Breakdown

2.7%
§101 Eligibility
13.7%
§102 Novelty
38.6%
§103 Obviousness
26.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17549028 PHYSIOLOGIC GROWTH OF CULTURED INTESTINAL TISSUE Non-Final OA The Regents of the University of Michigan
17436131 TARGETED DELIVERY OF IMMUNE-MODULATING VHH AND VHH-FUSION PROTEIN Non-Final OA Massachusetts Institute of Technology
18026474 CELL SUPPORT AND METHOD OF PRODUCING SAME, CELL CULTURE METHOD AND CELL STRUCTURE Final Rejection Konica Minolta, Inc.
18978181 FOAMY VIRUSES AND METHODS OF USE Non-Final OA Mayo Foundation for Medical Education and Research
17495597 MULTICELL CONJUGATES FOR ACTIVATING ANTIGEN-SPECIFIC T CELL RESPONSES Final Rejection Wisconsin Alumni Research Foundation
17669904 DIAGNOSIS AND TREATMENT OF CARDIOMYOPATHY Non-Final OA The General Hospital Corporation
18696014 TREATMENT OF POLYCYTHEMIA VERA VIA CRISPR/AAV6 GENOME EDITING Non-Final OA The Board of Trustees of the Leland Stanford Junior University
17168988 ARRDC1-MEDIATED MICROVESICLES (ARMMS) AND USES THEREOF Non-Final OA The Board of Trustees of the Leland Stanford Junior University
18941862 BIOACTIVE AND ANTIOXIDANT SUPRAMOLECULAR POLYMER HYDROGELS FOR NEURAL CELL CULTURE Non-Final OA Northwestern University
18929526 COST EFFECTIVE CULTURE MEDIA AND PROTOCOL FOR HUMAN INDUCED PLURIPOTENT STEM CELLS Non-Final OA Northwestern University
16960445 3D in vitro Models of Lung Tissue Non-Final OA THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE
18868301 MANIPULATING NEPHRON DIFFERENTIATION RATE IN INDUCED HUMAN PLURIPOTENT STEM CELL ORGANOIDS AND TISSUES BY ENGINEERING MECHANICS OF THE MICROENVIRONMENT Non-Final OA THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
18504261 GENE THERAPY FOR OCULAR DISORDERS Non-Final OA The Trustees of the University of Pennsylvania
19102450 CARRIER PEPTIDE FRAGMENT AND USE THEREOF Non-Final OA TOAGOSEI CO., LTD.
18981938 PHYSIOLOGICAL BIOMIMETIC CULTURE SYSTEM FOR HEART SLICES Non-Final OA UNIVERSITY OF LOUISVILLE RESEARCH FOUNDATION, INC.
17511187 CHIMERIC ANTIGEN RECEPTOR (CAR) NK CELLS AND USES THEREOF Final Rejection RESEARCH INSTITUTE AT NATIONWIDE CHILDREN'S HOSPITAL
17608636 THERAPEUTICALLY ACTIVE CELLS AND EXOSOMES Final Rejection Capricor, Inc.
17192736 PLATFORM ONCOLYTIC VECTOR FOR SYSTEMIC DELIVERY Non-Final OA KaliVir Immunotherapeutics LLC

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Frequently Asked Questions

What is examiner Jianjian Zhu's allowance rate?

58.1% of resolved applications examined by Jianjian Zhu were allowed (86 resolved cases), compared with 28.4% across Art Unit 1631 over the last five years.

Does an interview help with examiner Jianjian Zhu?

This examiner's interview lift is +82.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Jianjian Zhu take to allow a patent?

Applications allowed by Jianjian Zhu took 1,353 days on average from filing to allowance.

Which art unit does examiner Jianjian Zhu work in?

Jianjian Zhu examines applications in Art Unit 1631 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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