Axcan 's shares closed down 63 Canadian cents , or 4 percent , at C $ 16.93 in Toronto on Tuesday .
Axcan 's shares were down 3.8 percent , or 66 Canadian cents , at C $ 16.90 in Toronto on Tuesday .
The Infineon case began in August 2000 , when Rambus accused Infineon of patent infringement and Infineon counter-sued Rambus for breach of contract and fraud .