Legal news Roundup - April 4, 2013Compiled By Mallory Hendry CanadaClass action lawyer Tony Merchant put $1.7M in offshore tax havens, CBCB.C. sex workers want voices heard in June SCC case to determine constitutionality of prostitution laws, Vancouver SunCanada's foreign service workers say they are in legal position to strike, Chronicle HeraldOttawa police sergeant not guilty of sexual assault, could still face charges under Police Services Act, The National PostUnited StatesEve of new law sees patent office receive record number of applications, ReutersAAR Corp. has case brought by shareholders tossed by judge, ReutersInternationalEcuador group accused of fraud in Chevron rainforest pollution case, ReutersDelta sues bank over loan guarantees for foreign airlines, Reuters