title: Claims on tissue plasminogen activator.
abstract: A 'master' patent on a recombinant protein product has twice been overturned in British courts. The consequences may be far-reaching.
authors.affiliation: Intellectual Property in Business, London, UK.
authors.forename: R S
authors.initials: RS
authors.lastname: Crespi
mesh_terms: D005818:Genetic Engineering; D006801:Humans; D010330:Patents as Topic; D011487:Protein Conformation; D011994:Recombinant Proteins; D010959:Tissue Plasminogen Activator / Q000235:genetics*; D014481:United States
chemical_list: D011994:Recombinant Proteins; D010959:Tissue Plasminogen Activator