Why the Supreme Court is taking issue with the term “insolubly ambiguous”

In oral arguments in the Nautilus v Biosog case on Monday, several Supreme Court justices took issue with the Federal Circuit’s ruling that ambiguity in a patent is permissible unless a court finds the claim is “insolubly ambiguous”. Alli Pyrah takes a look at the history of the phrase and why the justices seem so sceptical about it