Scharf Banks Marmor LLC announced Darren S. Cahr has joined the firm to lead and expand its Intellectual Property & Advertising Practice.Cahr will advise clients on intellectual property issues, branding, false and comparative advertising, consumer protection, licensing, promotion law, and the legal implications of social media and new technology.Cahr has litigated and tried a wide variety of IP disputes in forums throughout the nation. His work as an IP litigator includes courtroom trials and injunctions …