EPO revokes Roche patent on PCR technology
The European Patent Office has revoked a key patent owned by Swisspharmaceutical firm Roche covering components used in DNA analysis via the polymerase chain reaction. Specifically, the EPO's action covers a patent (EPO-0-258-017 B1) claiming intellectual property on a number of important enzymes, including both native and recombinant forms of Taq DNA polymerase, used in PCR and gene sequencing.
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