“In Korea, willful can be applied even if the copier had no knowledge of the existence of a patent it copied. Knowledge of the subject that uses the patent is enough for it to apply,’’ said Kim Kyung-hwan, a lawyer at domestic law firm Minwho, by telephone. He continued, ``But in the United States it is a little different. The issue is more complex but to put it simply, whether the copier knew of a patent for the copied subject can be argued depending on the circumstance.” http://www.koreatimes.co.kr/www/news/tech/2012/11/419_125613.html