Weiss & Arons LLP successfully prosecuted a patent application for Complete Entertainment Resources ("CER") (U.S Patent No. 9,466,035).
After being hit with an anti-trust suit by CER, Live Nation retaliated with a Post Grant Review (PGR) of the CER patent.
But the PTAB denied Live Nation's bid, because the examiner rejected very similar arguments during the prosecution of the CER patent.
See Law360 Article "Live Nation Can't Get PTAB to Review Ticket-Resale Patent".