A 'master' patent on a recombinant protein product has twice been overturned in British courts. The consequences may be far-reaching.
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Crespi, R. Claims on tissue plasminogen activator. Nature 337, 317–318 (1989). https://doi.org/10.1038/337317a0
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DOI: https://doi.org/10.1038/337317a0
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