511. Patent specification insufficient.

A patent is invalid if the specification1 does not disclose2 the invention clearly enough and completely enough to enable the invention to be performed by a person skilled in the art3. In an ordinary product claim, the product is the invention and it is sufficiently enabled if the specification and common general knowledge enables the skilled person to make it4.

This objection corresponds closely to one branch of the objection to the validity of patents under the

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