Alnylam European Patent Upheld by Opposition Board | GenomeWeb

Alnylam Pharmaceuticals this week announced that the European Patent Office has upheld one of the company's RNAi-related patents in oral proceedings held before the office's opposition board.

The patent, No. EP 1352061, was the first to be granted in Europe from the company's so-called Kreutzer-Limmer II patent family.

The company said that the patent, which includes claims covering methods of silencing about 130 genes using siRNAs of up to 49 nucleotides in length, had been challenged by Merck subsidiary Sirna Therapeutics.

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