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Last Updated: March 29, 2024

DURAPHYL Drug Patent Profile


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Which patents cover Duraphyl, and what generic alternatives are available?

Duraphyl is a drug marketed by Forest Labs and is included in three NDAs.

The generic ingredient in DURAPHYL is theophylline. There are thirty-six drug master file entries for this compound. Twenty suppliers are listed for this compound. Additional details are available on the theophylline profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Duraphyl

A generic version of DURAPHYL was approved as theophylline by RHODES PHARMS on September 1st, 1982.

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US Patents and Regulatory Information for DURAPHYL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Forest Labs DURAPHYL theophylline TABLET, EXTENDED RELEASE;ORAL 088503-001 Apr 3, 1985 DISCN No No ⤷  Try a Trial ⤷  Try a Trial ⤷  Try a Trial
Forest Labs DURAPHYL theophylline TABLET, EXTENDED RELEASE;ORAL 088504-001 Apr 3, 1985 DISCN No No ⤷  Try a Trial ⤷  Try a Trial ⤷  Try a Trial
Forest Labs DURAPHYL theophylline TABLET, EXTENDED RELEASE;ORAL 088505-001 Apr 3, 1985 DISCN No 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

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