The complete specification is a techno-legal document which fully and particularly describes the invention and discloses the best method of performing it.

Main features of complete specification are

• The Complete Specification must be framed with utmost good faith and must not contain any false representation or description of the invention or any material part of it, which would otherwise mislead the public.  The complete specification must not be framed in ambiguous languages but must be as clear and concise as the nature of the subject would admit.
• The complete specification must be intelligible to an ordinary workman possessing the ordinary skill and knowledge of that branch or the useful art to which the invention relates. It is not required to describe the invention and the manner in which it is to be performed so fully as to instruct persons wholly ignorant of the subject matter.
• If the complete specification describes anything, which is not new, it must be clearly distinguished from the novel features of the invention.
• An amendment by way of modifications and variations of the description if any, must fall within the scope of the description
• If the inventor does not disclose all the relevant information or mislead the public or gives a false description of the invention, the patent would be liable to be revoked.
• The detailed description should be supplemented by drawings in all cases in which the inventions are capable of being illustrated.
• It is not enough if a mere list of the various parts that make up the apparatus or device is given. The mode of construction of the apparatus and the function of its different parts should be described.