Last Updated: November 9, 2026

Details for Patent: 6,906,055

Name: Drug Patent Intelligence for US Patent 6906055
Creator: DrugPatentWatch
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Summary for Patent: 6,906,055

Title:	Phosphonocephem compound
Abstract:	A cephem compound (particularly its crystal) represented by the formula [I], wherein X is CH3COOH, CH3CH2COOH or CH3CN, and n is 0 to 5, is useful as an antibacterial agent (particularly anti-MRSA agent) and shows superior quality such as high solid stability, possible long-term stable preservation and the like.
Inventor(s):	Tomoyasu Ishikawa, Shohei Hashiguchi, Yuji Iizawa
Assignee:	Takeda Pharmaceutical Co Ltd
Application Number:	US10/343,285
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 6,906,055
Patent Claim Types: see list of patent claims	Use; Composition;

Drugs Protected by US Patent 6,906,055

Glossary

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>TE	>Type	>RLD	>RS	>Patent No.	>Patent Expiration	>Product	>Substance	>Delist Req.	>Patented / Exclusive Use	>Submissiondate

Foreign Priority and PCT Information for Patent: 6,906,055

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
Japan	2000-354959	Nov 21, 2000

PCT Information
PCT Filed	August 10, 2001	PCT Application Number:	PCT/JP01/06904
PCT Publication Date:	February 21, 2002	PCT Publication Number:	WO02/14333

International Family Members for US Patent 6,906,055

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	431827	⤷ Start Trial
Australia	7775301	⤷ Start Trial
Canada	2418614	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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