Pour les praticiens en PI
Dans Ergo Licensing v. CareFusion 303 (Fed. Cir. 2012) la Federal Circuit des États-Unis a déterminé:
If special programming is required for a general purpose computer to perform the corresponding claimed function, then the default rule requiring disclosure of an algorithm applies. It is only in the rare circumstances where any general-purpose computer without any special programming can perform the function that an algorithm need not be disclosed.
Thus, the means-plus-function limitation has no corresponding structure in the specification because “there is no algorithm described in any form for the function of ‘controlling the adjusting means.'” As a result, the claim is invalid as indefinite.