Separcor, the makers of the sleep drug Lunesta, stated this week that they are facing a possible trademark infringement from a nutraceuticals company over their butterfly that they use in their popular ads on TV. We have all seen the tranquil butterfly floating in and out of peoples homes as they are now able to get to a peaceful sleep, with help of Lunesta. Now that butterfly has come into question, no how close it mimmicks Thyros, a maker of sleep aides, logo they use.