Veterinary professor Byeong Chun Lee took over leadership of the team behind Snuppy. In 2008, Snuppy became involved in the first known successful breeding between cloned canines, after sperm taken from Snuppy was used to artificially inseminate two cloned females, which resulted in the birth of 10 puppies. Nine of the puppies survived. The SNU team, under Lee, have gone on to clone over 30 dogs and five wolves. SNU, which claimed to own the patent for the process used to clone Snuppy, formed a license agreement with RNL Bio, a commercial pet cloning company. Hwang entered into a partnership with RNL Bio's competitor, BioArts International, which caused an ongoing legal battle into who owns the patent rights although Bio Arts withdrew from dog cloning in 2009. RNL completed the first commercial cloning in August 2008 but ran into financial trouble in 2013.