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Sufficiency of disclosure


Sufficiency of disclosure or enablement is a patent law requirement according to which a patent application must disclose a claimed invention in sufficient detail for the notional person skilled in the art to carry out that claimed invention. The requirement is fundamental to patent law: a monopoly is granted for a given period of time in exchange for a disclosure to the public how to make or practice the invention.

The disclosure requirement lies at the heart and origin of patent law. An inventor, or the inventor's assignee, is granted a monopoly for a given period of time in exchange for the inventor disclosing to the public how to make or practice his or her invention. If a patent fails to contain such information, then the bargain is violated, and the patent is unenforceable or can be revoked.

Article 83 of the European Patent Convention states that an application must disclose the invention in a manner sufficiently clear and complete for it to be carried out by a person skilled in the art. Sufficiency is considered by the examiner during examination of a patent application and the requirement of Article 83 must be complied with in order for a patent to be granted. Insufficient disclosure is also a ground for opposition under Article 100(b) EPC.

For instance, an insufficiency of disclosure might arise if references to standardisation documents are provided to support essential aspects of the invention, but if these references are not sufficiently precise so that "the skilled person would have to make ... undue efforts to find and get together the information it needs to carry out the invention".


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