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Generated: August 22, 2017

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Summary for Patent: ► Subscribe

Title: Esters of 5-aminolevulinic acid as photosensitizing agents in photochemotherapy
Abstract:The invention provides a pharmaceutical compositions comprising a compound of formula I: wherein, R.sup.1 and R.sup.2 have any of the values defined in the specification; or a salt thereof; and a pharmaceutically acceptable carrier or excipient. The invention also provides a method for the diagnosis or photochemotherapeutic treatment of disorders or abnormalities of external or internal surfaces of the body using such compounds or salts.
Inventor(s): Gierskcky; Karl E. (Oslo, NO), Moan; Johan (Oslo, NO), Peng; Qian (Oslo, NO), Steen; Harald (Oslo, NO), Warloe; Trond (Oslo, NO), Bjorseth; Alf (Oslo, NO)
Assignee: PhotoCure AS (Olso, NO)
Application Number:08/913,257
Patent Claim Types:
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Use; Composition; Compound; Device;

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Foreign Priority and PCT Information for Patent: ► Subscribe

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom9504948Mar 10, 1995
United Kingdom9525822Dec 18, 1995
PCT Information
PCT FiledMarch 08, 1996PCT Application Number:PCT/GB96/00553
PCT Publication Date:September 19, 1996PCT Publication Number: WO96/28412

International Patent Family for Patent: ► Subscribe

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Netherlands300207► Subscribe
Germany122006000051► Subscribe
European Patent Office0820432► SubscribeSPC024/2002Ireland► Subscribe
European Patent Office0820432► SubscribeSPC/GB02/038United Kingdom► Subscribe
European Patent Office0820432► Subscribe300176Netherlands► 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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