Once upon a time, there was a company that sold incredibly overpriced cables... When that well went dry, they moved onto patent trolling. This is the story of when they attempted to patent troll the wrong guy...
Links: Monster Cable - Wikipedia, Monster Cables, Monster Ripoff: 80% Markups – Consumerist, Do Coat Hangers Sound As Good Monster Cables? – Consumerist, HDMI cable scam used to fool in-store customers? | Engadget, Monster "HDMI Difference" scam still kickin' in Fry's Electronics | Engadget, Monster patent C&D, exhibits, Blue Jeans Cable response, Blue Jeans Cable Strikes Back - Response to Monster Cable | Audioholics
