Legal news Roundup - August 20, 2013Compiled By Mallory Hendry CanadaOfficer charged with murder in Yatim shooting arrives at courthouse this morning, The National Post NDP wants special Commons hearing on wireless industry, Toronto StarThree of victims' families sue Pickton, police over notorious murders, Calgary Herald United StatesPatent suit against AOL dismissed by judge, ReutersLegal retainer for owner of clinic in doping scandal paid by A-Rod, ReutersInternationalPartner of journalist who reported on Snowden launches legal action over U.K. detention, ReutersBangladesh prosecutors charge human rights group with contempt, Reuters