The title of the invention should be technically accurate and descriptive, but brief. Preferably, the title should consist of two to seven words (less than 250 characters). InPress Patent places it at the top of the first page of the specification.
In that the first step in bibliographic (key word) and classification (class and subclass) patent searches is (typically) viewing a listing of the first 69 characters of patent titles, care should be taken in choosing each word of an invention title. A reading of the first 69 characters of the title should be sufficient to motivate the reader to view the entire title and patent abstract.
Law - Title of the Invention