The number of patent lawsuits filed in U.S. district courts is not, despite claims to the contrary, on the decline.

Patent case filings generally were higher in the first five months of 2015 than in the last eight months of 2014. They also were higher than in the comparable five months of 2014, according to data analyzed by legal analytics company Lex Machina at the request of CorpCounsel.com.