I saw this on a thread on Reddit:

>The lawyers royally fucked up.

>All they had to do was provide proof that McDonalds sells Big Macs. Their evidence was signed affidavits by high ranking board members, advertisements, a Wikipedia entry and a few others of a similar vein.

>Problem was they failed to provide any evidence that McDonalds actually sells Big Macs, just that Big Macs exist and judges really don’t like “everybody knows” being treated as evidence.