Zhan competitive analysis

Explore patent oppositions filed by Zhan against competitors, revealing strategic technology disputes and market positioning.

Last updated on: Aug 27, 2026
Patent NumberTitleApplicantOpposition Date
Novel Synthesis Of Salcaprozic Acid By Amide FormationNOVO NORDISKNov 28, 2025

Explore Zhan's recently opposed patents, revealing key competitive challenges and strategic patent disputes in the industry. Track oppositions filed by competitors to understand technology battlegrounds and assess potential risks.

Last updated on: Aug 27, 2026
Patent NumberPublication DateTitleTotal Oppositions
Dec 18, 2024Medical Device1
Sep 21, 2022Hearing Assistance Device With Beamformer Optimized Using A Priori Spatial Information1
May 4, 2022Vehicle Interior Systems Having A Curved Cover Glass With Improved Impact Performance And Methods For Forming The Same1
Dec 25, 2019Paper Handkerchief Folding Device2
Nov 20, 2019Medical Device1
Jun 27, 2018Ruthenium Complex Ligand, Ruthenium Complex, Carried Ruthenium Complex Catalyst And The Preparing Methods And The Use Thereof1
Aug 19, 2015Crispr-Cas Systems And Methods For Altering Expression Of Gene Products7

Latest PTAB cases involving Zhan

Discover the latest PTAB cases involving Zhan, highlighting their recent legal challenges and patent disputes.

Last updated on: Sep 1, 2026
Proceeding NumberFiling DatePetitionerRespondentStatus

Get alerts for PTAB Cases involving Zhan

IPR2022-01065Jun 7, 2022FRESENIUS KABI USAZHANGTerminated-Settled
IPR2022-00201Nov 24, 2021FRESENIUS KABI USAZHANGTerminated-Settled
IPR2021-01542Sep 24, 2021FRESENIUS KABI USAZHANGTerminated-Settled
IPR2021-01288Aug 18, 2021FRESENIUS KABI USAZHANGTerminated-Settled
IPR2021-01336Aug 18, 2021FRESENIUS KABI USAZHANGTerminated-Settled
IPR2018-00955May 21, 2018NITTO DENKOZHANGTerminated-Settled
IPR2018-00956May 21, 2018NITTO DENKOZHANGTerminated-Settled
IPR2017-02100Sep 30, 2017PREFERRED PROPPANTSZHANGTerminated

Peer Comparison New

IP litigation analysis comparing Zhan with top 3 competitors. Includes complete PTAB case data and opposition data from 2018 onwards.

Last updated on: Aug 27, 2026
CompanyOppositions FiledOppositions FacedPTAB Cases FiledPTAB Cases Faced
ZHANG113 - 8
CRISPR THERAPEUTICS18 - - -
FRESENIUS KABI USA - - 265
NITTO DENKO - 21116