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Last Updated: June 24, 2021

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ZOSYN Drug Profile


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

Zosyn is a drug marketed by Wyeth Pharms and is included in two NDAs. There are three patents protecting this drug and one Paragraph IV challenge.

This drug has forty-one patent family members in thirty-four countries.

The generic ingredient in ZOSYN is piperacillin sodium; tazobactam sodium. There are sixteen drug master file entries for this compound. Fourteen suppliers are listed for this compound. Additional details are available on the piperacillin sodium; tazobactam sodium profile page.

DrugPatentWatch® Generic Entry Outlook for Zosyn

There is one Paragraph IV patent challenge for this drug. This may lead to patent invalidation or a license for generic production.

Indicators of Generic Entry

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Paragraph IV (Patent) Challenges for ZOSYN
Tradename Dosage Ingredient NDA Submissiondate
ZOSYN INJECTABLE;INJECTION piperacillin sodium; tazobactam sodium 050684 2011-12-06

US Patents and Regulatory Information for ZOSYN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Wyeth Pharms ZOSYN piperacillin sodium; tazobactam sodium INJECTABLE;INJECTION 050684-001 Oct 22, 1993 DISCN Yes No   Try Before You Buy   Try Before You Buy Y   Try Before You Buy
Wyeth Pharms ZOSYN IN PLASTIC CONTAINER piperacillin sodium; tazobactam sodium INJECTABLE;INJECTION 050750-001 Feb 24, 1998 RX Yes Yes   Try Before You Buy   Try Before You Buy Y   Try Before You Buy
Wyeth Pharms ZOSYN piperacillin sodium; tazobactam sodium INJECTABLE;INJECTION 050684-003 Oct 22, 1993 DISCN Yes No   Try Before You Buy   Try Before You Buy Y   Try Before You Buy
Wyeth Pharms ZOSYN piperacillin sodium; tazobactam sodium INJECTABLE;INJECTION 050684-002 Oct 22, 1993 DISCN Yes No   Try Before You Buy   Try Before You Buy Y   Try Before You Buy
Wyeth Pharms ZOSYN piperacillin sodium; tazobactam sodium INJECTABLE;INJECTION 050684-004 Oct 22, 1993 DISCN Yes No   Try Before You Buy   Try Before You Buy Y   Try Before You Buy
Wyeth Pharms ZOSYN IN PLASTIC CONTAINER piperacillin sodium; tazobactam sodium INJECTABLE;INJECTION 050750-002 Feb 24, 1998 RX Yes Yes   Try Before You Buy   Try Before You Buy Y   Try Before You Buy
>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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