Apple and Samsung are fighting a multi-year, multi-country patent battle which includes over 50 different lawsuits. To try to end this fracas, the two companies are meeting on May 21 and 22 in San Francisco to discuss a settlement, according to a report in AllThingsD. Besides a possible agreement, each side must provide the US judge, who ordered this mediation, with "a candid evaluation of the parties' likelihood of prevailing on the claims and defenses."