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     <title>Patent challenges reduce pharmaceutical innovation and productivity, researchers say</title>
   	 <description>The development of new and innovative pharmaceuticals is being stifled by a U.S. law and successful patent challenges that embolden generic competition, according to an article published in this week's issue of the journal Science.</description>
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	 <category>Medicine &amp; Health</category>
	 <pubDate>Thu, 15 Oct 2009 16:40:08 EST</pubDate>
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