Pharmacyclics Shares Fall As Kyle Bass Files Petition To Cancel Patent By: Benzinga via Benzinga April 20, 2015 at 16:09 PM EDT Pharmacyclics, Inc. (NASDAQ: PCYC) fell victim Monday to the latest patent challenge by hedge fund manager and short seller Kyle ... Read More >> Related Stocks: AbbVie Acorda Therapeutics Jazz Pharma Plc Shire Plc Ads