The legal process could take weeks. Coleman's suit will focus on three key areas: those 654 rejected absentee ballots, an additional 150 ballots from Democatic-leaning areas that the Coleman campaign claims were double-counted for Franken and 130 ballots that were lost after election night but were included in the final tally after the recount.
The state Supreme Court ruled today that those issues would be better handled in a post-recount lawsuit.
Minnesota Chief Justice Eric Magnuson would appoint a three-judge panel to oversee the next stage in the legal process.
Franken, a comedian, writer and radio talk show host, is perhaps best known for his stint on "Saturday Night Live," where he played self-help guru Stuart Smalley and served as a long-time writer. Franken was recently a political talk show host on the left-leaning Air America radio network.
Coleman served one term in the Senate after defeating Walter Mondale in 2002. Mondale stepped in as the Democratic candidate that year after two-term Sen. Paul Wellstone was killed in a plane crash 11 days before Election Day.
Coleman's term as senator ended Saturday.