Rituximab - Biologic Drug Details

Summary for rituximab

Tradenames:	1
High Confidence Patents:	0
Applicants:	5
BLAs:	6
Suppliers: see list	4
Recent Clinical Trials:	See clinical trials for rituximab
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for rituximab

Recent Clinical Trials for rituximab

Identify potential brand extensions & biosimilar entrants

Sponsor	Phase
Alexion Pharmaceuticals, Inc.	Phase 4
University of California, Los Angeles	Phase 1
Janssen Inc.	Phase 2

See all rituximab clinical trials

Recent Litigation for rituximab

Identify key patents and potential future biosimilar entrants

District Court Litigation

Case Name	Date
AbbVie Inc. v. Hetero USA, Inc.	2024-08-08
Acerta Pharma B.V. v. Cipla Limited	2024-05-16
AbbVie Inc. v. Hetero USA, Inc.	2023-11-20

See all rituximab litigation

PTAB Litigation

Petitioner	Date
Sandoz Inc.	2023-02-03
Celltrion, Inc. et al.	2022-02-21
Fresenius Kabi USA, LLC	2021-09-24

See all rituximab litigation

Pharmacology for rituximab

Mechanism of Action	CD20-directed Antibody Interactions
Established Pharmacologic Class	CD20-directed Cytolytic Antibody

Note on Biologic Patents

Matching patents to biologic drugs is far more complicated than for small-molecule drugs.

DrugPatentWatch employs three methods to identify biologic patents:

1. Brand-side disclosures in response to biosimilar applications

These patents were identified from disclosures by the brand-side company, in response to a potential biosimilar seeking to launch. They have a high certainty of blocking biosimilar entry. The expiration dates listed are not estimates — they're expiration dates as indicated by the brand-side company.

2. General brand-side disclosures

These patents were identified from searching drug labels and other general disclosures from the brand-side company. This list may exclude some of the patents which block biosimilar launch, and some of these patents listed may not actually block biosimilar launch. The expiration dates listed for these patents are estimates, based on the grant date of the patent.

3. Patents from broad patent text search

For completeness, these patents were identified by searching the patent literature for mentions of the branded or ingredient name of the drug. Some of these patents protect the original drug, whereas others may protect follow-on inventions or even inventions casually mentioning the drug. The expiration dates listed for these patents are estimates, based on the grant date of the patent.

1) High Certainty: US Patents for rituximab Derived from Brand-Side Litigation

No patents found based on brand-side litigation

2) High Certainty: US Patents for rituximab Derived from Company Disclosures

No patents found based on company disclosures

3) Low Certainty: US Patents for rituximab Derived from Patent Text Search

No patents found based on company disclosures