The Oslo District Court held that Jets AS’ patent for a liquid seal pump of the helical screw type for use in vacuum drainage systems lacked novelty over one of Jets’ own patents. Despite the court’s finding on invalidity, the court did not consider Jets warning letter to a customer of its competitor, Evac Oy, in conflict with good business practice among traders pursuant to §25 of the Norwegian Marketing Control Act.

The full summary of this case has been published on Kluwer IP Law.


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