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A great alternative to oppositions

The entire revocation of a European patent is very rare, and can take up to seven years. Jürgen Kaiser looks at the advantages of another option - filing observations while the patent is still in the examination phase

Many patent systems in the world provide at least one post-issue challenging system in which a recently granted patent can be revoked if prior art shows up disclosing the invention of the patent or at least rendering it obvious, or...

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