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Serving leading biopharmaceutical companies globally:

Farmers Insurance
Daiichi Sankyo
Queensland Health

Generated: November 20, 2017

DrugPatentWatch Database Preview

Details for Patent: 5,972,389

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Which drugs does patent 5,972,389 protect, and when does it expire?

Patent 5,972,389 protects PROQUIN XR and is included in one NDA.

This patent has fifteen patent family members in twelve countries.

Summary for Patent: 5,972,389

Title: Gastric-retentive, oral drug dosage forms for the controlled-release of sparingly soluble drugs and insoluble matter
Abstract:Controlled-release oral drug dosage forms that comprise a tablet or capsule containing a plurality of particles of a solid-state drug dispersed in a swellable/erodible polymer, such as poly(ethylene oxide) are described. Once ingested, the tablet or capsule disintegrates to disperse the particles within the stomach where they imbibe water to cause them to swell and promote retention in fed-mode-induced patients. As the gastric-retained dosage form gradually erodes, the drug is released in a controlled manner to the stomach for treatment of local disorders, and to the upper gastrointestinal tract where it becomes available for absorption in a controlled and therapeutic manner. Drug-containing vesicles, such as liposomes or nanoparticles or enteric-coated drug particles, can also be delivered to the gastrointestinal tract in a controlled manner using the gastric-retentive dosage forms of the present invention.
Inventor(s): Shell; John W. (Hillsborough, CA), Louie-Helm; Jenny (Union City, CA)
Assignee: DepoMed, Inc. (Foster City, CA)
Application Number:08/716,906
Patent Claim Types:
see list of patent claims
Dosage form; Delivery; Formulation; Use;

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Depomed Inc
ciprofloxacin hydrochloride
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International Patent Family for Patent: 5,972,389

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
South Korea20000048500► Subscribe
Japan2001500879► Subscribe
Indonesia22124► Subscribe
Spain2213836► Subscribe
European Patent Office1424069► Subscribe
European Patent Office0941071► Subscribe
Norway991341► Subscribe
South Korea100685303► Subscribe
Germany69727153► Subscribe
Canada2266589► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

US Department of Justice
Fish and Richardson
US Army
Queensland Health

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

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