Last Updated: September 28, 2026

FOSRENOL Drug Patent Profile


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When do Fosrenol patents expire, and what generic alternatives are available?

Fosrenol is a drug marketed by Takeda Pharms Usa and is included in two NDAs. There are two patents protecting this drug and two Paragraph IV challenges.

The generic ingredient in FOSRENOL is lanthanum carbonate. Seven suppliers are listed for this compound. Additional details are available on the lanthanum carbonate profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Fosrenol

A generic version of FOSRENOL was approved as lanthanum carbonate by NATCO PHARMA LTD on August 11th, 2017.

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Summary for FOSRENOL
Paragraph IV (Patent) Challenges for FOSRENOL
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
FOSRENOL Oral Powder lanthanum carbonate 750 mg and 1000 mg 204734 1 2015-11-25
FOSRENOL Chewable Tablet lanthanum carbonate 500 mg, 750 mg and 1000 mg 021468 3 2008-10-27

US Patents and Regulatory Information for FOSRENOL

FOSRENOL is protected by two US patents.

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Takeda Pharms Usa FOSRENOL lanthanum carbonate POWDER;ORAL 204734-002 Sep 24, 2014 RX Yes Yes 8,980,327 ⤷  Start Trial Y ⤷  Start Trial
Takeda Pharms Usa FOSRENOL lanthanum carbonate TABLET, CHEWABLE;ORAL 021468-002 Oct 26, 2004 AB RX Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Takeda Pharms Usa FOSRENOL lanthanum carbonate POWDER;ORAL 204734-001 Sep 24, 2014 RX Yes No 8,980,327 ⤷  Start Trial Y ⤷  Start Trial
Takeda Pharms Usa FOSRENOL lanthanum carbonate TABLET, CHEWABLE;ORAL 021468-003 Nov 23, 2005 AB RX Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Supplementary Protection Certificates for FOSRENOL

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
0817639 PA2008005 Lithuania ⤷  Start Trial PRODCUT NAME: LANTANO KARBONATO HIDRATAS; NAT. REG. DATE/NO: LT/1/07/0776/001-021; FIRST REG. DATE: 20040319
0817639 PA2008005,C0817639 Lithuania ⤷  Start Trial PRODUCT NAME: LANTANO KARBONATO HIDRATAS; NAT. REGISTRATION NO/DATE: LT/1/07/0776/001-021 20071003; FIRST REGISTRATION: 17192, 2004-03-19 ; 18466, 2004-03-19; 21073, 2004-10-19; 21074 20041029
0817639 SPC/GB06/036 United Kingdom ⤷  Start Trial SPC/GB06/036: 20061027
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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