IP Verse

Sanofi competitive analysis

Latest oppositions filed by Sanofi

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

Last updated on: Jan 29, 2026

Patent Number	Title	Applicant	Opposition Date
EP3303598	Targeted Lipid Particles For Systemic Delivery Of Nucleic Acid Molecules To Leukocytes	RAMOT AT TEL AVIV UNIVERSITY	Dec 15, 2025
EP3823594	Liquid Antibody Formulation	ICHNOS SCIENCES	Nov 3, 2025
EP3728328	Bispecific Antigen Binding Construct	ARGENX BVBA	Jul 23, 2025
EP4226941	Pegylated Liposomes For Delivery Of Immunogen-Encoding Rna	GLAXOSMITHKLINE	Jul 22, 2025
EP3853305	High-Purity Peg Lipids And Uses Thereof	MODERNA	Jun 24, 2025
EP3678654	Pneumococcal Polysaccharides And Their Use In Immunogenic Polysaccharide-Carrier Protein Conjugates	MERCK SHARP & DOHME	Mar 18, 2025
EP3668568	Dosage Measurement Module On Injection Pen	ELI LILLY	Mar 7, 2025
EP3981437	Nucleic Acid Vaccines	MODERNA	Mar 3, 2025
EP4023249	Nucleic Acid Vaccines	MODERNA	Mar 3, 2025
EP4108671	Modified Nucleosides, Nucleotides, And Nucleic Acids, And Uses Thereof	MODERNA	Feb 28, 2025

Latest patents of Sanofi opposed by its competitors

Explore Sanofi'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: Jan 29, 2026

Patent Number	Publication Date	Title	Total Oppositions
EP3774838	Sep 3, 2025	Lixisenatide Synthesis With Capping	2
EP2851087	Jun 18, 2025	Stabilization Of Vaccines By Lyophilization	1
EP3258992	May 28, 2025	Data Collection Device For Attachment To An Injection Device	2
EP3380136	Apr 30, 2025	Auto-Injector	2
EP3881879	Apr 2, 2025	Assembly For A Drug Delivery Device Comprising A Feedback Feature	1
EP3503946	Dec 11, 2024	A Device For Attachment To An Injection Device	1
EP2571517	Oct 16, 2024	Long - Acting Formulations Of Insulins	1
EP4056212	Oct 9, 2024	Autoinjector	1
EP3506931	Jul 31, 2024	Methods For Preventing Or Treating Allergy By Administering An Il-4R Antagonist	4
EP3889181	Apr 24, 2024	Methods For Treating Atopic Dermatitis By Administering An Il-4R Antagonist	7

Latest PTAB cases involving Sanofi

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

Last updated on: Feb 3, 2026

Proceeding Number	Filing Date	Petitioner	Respondent	Status
Get alerts for PTAB Cases involving Sanofi
IPR2019-01658	Oct 7, 2019	MYLAN PHARMACEUTICALS	SANOFI AVENTIS DEUTSCHLAND	Institution Denied
IPR2019-00977	May 2, 2019	PFIZER	SANOFI AVENTIS DEUTSCHLAND	Terminated-Other
IPR2019-00978	May 2, 2019	PFIZER	SANOFI AVENTIS DEUTSCHLAND	Terminated-Other
IPR2019-00979	May 2, 2019	PFIZER	SANOFI AVENTIS DEUTSCHLAND	Final Written Decision
IPR2019-00980	May 2, 2019	PFIZER	SANOFI AVENTIS DEUTSCHLAND	Terminated-Other
IPR2019-00981	May 2, 2019	PFIZER	SANOFI AVENTIS DEUTSCHLAND	Terminated-Other
IPR2019-00982	May 2, 2019	PFIZER	SANOFI AVENTIS DEUTSCHLAND	Terminated-Other
IPR2019-00987	May 2, 2019	PFIZER	SANOFI AVENTIS DEUTSCHLAND	Terminated-Other
IPR2019-01022	May 2, 2019	PFIZER	SANOFI AVENTIS DEUTSCHLAND	Terminated-Other
IPR2019-01023	May 2, 2019	PFIZER	SANOFI AVENTIS DEUTSCHLAND	Terminated-Other

Peer Comparison New

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

Last updated on: Jan 29, 2026

Company	Oppositions Filed	Oppositions Faced	PTAB Cases Filed	PTAB Cases Faced
SANOFI	61	23	-	-
CUREVAC	-	62	-	1
GLAXOSMITHKLINE	29	114	8	12
MODERNA	5	75	4	2