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Last Updated: March 28, 2024

ZYFLO CR Drug Patent Profile


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

Zyflo Cr is a drug marketed by Chiesi and is included in one NDA.

The generic ingredient in ZYFLO CR is zileuton. There are eight drug master file entries for this compound. Five suppliers are listed for this compound. Additional details are available on the zileuton profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Zyflo Cr

A generic version of ZYFLO CR was approved as zileuton by RISING on March 17th, 2017.

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US Patents and Regulatory Information for ZYFLO CR

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Chiesi ZYFLO CR zileuton TABLET, EXTENDED RELEASE;ORAL 022052-001 May 30, 2007 DISCN Yes No ⤷  Try a Trial ⤷  Try a Trial ⤷  Try a Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Expired US Patents for ZYFLO CR

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Chiesi ZYFLO CR zileuton TABLET, EXTENDED RELEASE;ORAL 022052-001 May 30, 2007 ⤷  Try a Trial ⤷  Try a Trial
Chiesi ZYFLO CR zileuton TABLET, EXTENDED RELEASE;ORAL 022052-001 May 30, 2007 ⤷  Try a Trial ⤷  Try a Trial
Chiesi ZYFLO CR zileuton TABLET, EXTENDED RELEASE;ORAL 022052-001 May 30, 2007 ⤷  Try a Trial ⤷  Try a Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

International Patents for ZYFLO CR

See the table below for patents covering ZYFLO CR around the world.

Country Patent Number Title Estimated Expiration
Japan S63264456 INDOLE, BENZOFURAN AND BENZOTHIOPHENE-CONTAINING LIPOXYGENASE INHIBITIVE COMPOUND ⤷  Try a Trial
Austria 165734 ⤷  Try a Trial
Japan H03148272 LIPOXYGENASE CONTROL COMPOUND ⤷  Try a Trial
World Intellectual Property Organization (WIPO) 9406416 ⤷  Try a Trial
Denmark 0663820 ⤷  Try a Trial
Greece 3022833 ⤷  Try a Trial
Italy MI922192 ⤷  Try a Trial
>Country >Patent Number >Title >Estimated Expiration

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