Article 53 – Exceptions to patentability - The European Patent Convention, Convention on the Grant of European Patents – (European Patent Convention), Part II – Substantive patent law, Chapter I – Patentability
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European patents shall not be granted in respect of:
inventions the commercial exploitation of which would be contrary to "ordre public" or morality; such exploitation shall not be deemed to be so contrary merely because it is prohibited by law or regulation in some or all of the Contracting States;
plant or animal varieties or essentially biological processes for the production of plants or animals; this provision shall not apply to microbiological processes or the products thereof;
methods for treatment of the human or animal body by surgery or therapy and diagnostic methods practised on the human or animal body; this provision shall not apply to products, in particular substances or compositions, for use in any of these methods.