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Celltrion competitive analysis

Explore the latest publications and patents granted to Celltrion, showcasing their recent innovations and technological advancements.

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

Last updated on: Sep 18, 2025

Patent Number	Title	Applicant	Opposition Date
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EP4108259	Process For Concentration Of Antibodies And Therapeutic Products Thereof	GENENTECH	Oct 4, 2024
EP3805248	Process For Concentration Of Antibodies And Therapeutic Products Thereof	GENENTECH	Oct 16, 2023
EP2825558	Combination Therapy For The Treatment Of Ovarian Cancer	F HOFFMANN LA ROCHE	Feb 17, 2020

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

Last updated on: Sep 18, 2025

Proceeding Number	Filing Date	Petitioner	Respondent	Status
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IPR2025-00456	Jan 15, 2025	CELLTRION	REGENERON PHARMACEUTICALS	Discretionary Denial
IPR2024-00260	Dec 14, 2023	CELLTRION	REGENERON PHARMACEUTICALS	Terminated-Adverse Judgment
IPR2023-00620	Feb 28, 2023	CELLTRION	REGENERON PHARMACEUTICALS	Institution Denied
IPR2023-00533	Feb 10, 2023	CELLTRION	REGENERON PHARMACEUTICALS	Final Written Decision
IPR2023-00532	Feb 10, 2023	CELLTRION	REGENERON PHARMACEUTICALS	Final Written Decision
IPR2023-00462	Jan 17, 2023	CELLTRION	REGENERON PHARMACEUTICALS	Terminated-Adverse Judgment
IPR2022-00579	Feb 21, 2022	CELLTRION	CHUGAI SEIYAKU KABUSHIKI KAISHA CHUGAI PHARMACEUTICAL	Final Written Decision
IPR2022-00578	Feb 21, 2022	CELLTRION	CHUGAI SEIYAKU KABUSHIKI KAISHA CHUGAI PHARMACEUTICAL	Final Written Decision
IPR2022-00257	Dec 9, 2021	CELLTRION	REGENERON PHARMACEUTICALS	Final Written Decision
IPR2022-00258	Dec 9, 2021	CELLTRION	REGENERON PHARMACEUTICALS	Final Written Decision

Top competitors of Celltrion based on patent oppositions.