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The European Patent Convention

 
 

Article 66[ 57 ]
Equivalence of European filing with national filing

A European patent application which has been accorded a date of filing shall, in the designated Contracting States, be equivalent to a regular national filing, where appropriate with the priority claimed for the European patent application. 
 
See opinion of the Enlarged Board of Appeal G 4/98 (Annex I).
References

Art. 80, 87, 88, 135, 137, 140
R. 40, 155