The pair were ridiculed for their alleged participation in the fraud on the front cover of the satirical magazine Private Eye. On 10 September 2008, Ant & Dec announced that the frauds "will never happen again", insisting that a "high-tech system" and strict rules will ensure viewers cannot lose out with poorly monitored premium rate phone lines. On 30 September 2008, it was reported that Ant & Dec were being sued for $US30 million by Greek American stand-up comedian and actor ANT for using the name 'Ant' in the United States. The lawsuit, among other things, alleges trademark infringement and fraud. The suit was dismissed in May 2010. The pair have had a UK registered trademark for 'Ant & Dec' in the category of 'Entertainment services' since 2003.
Question: How many months did it take for the lawsuit against Ant & Dec to be dismissed?
Answer: 20