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| | Patent infringement liability changes |
 | | Patents on medical and surgical procedures performed on a human body, organ cadaver, or even on an animal used in medical research or instruction relating to the treatment of humans, are now unenforceable. |
 | | Still covered under the patent infringement laws, however, are those activities that use a patented process, machine, manufacture, composition of matter or involve the practice of a patented use of a composition of matter. |
 | | Patentable uses of drugs, patentable uses of chemical or biological reagents for diagnostic purposes, patentable methods of scheduling or timing administration of drugs and patentable methods for combining drug therapies will all be subject to patent protection. |
| www.physiciansnews.com /law/1097meyers.html (1448 words) |
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