Elvis fans wait to tour Graceland during Elvis Presley's 75th birthday celebration in Memphis
Elvis fans wait to tour Graceland during Elvis Presley's 75th birthday celebration in Memphis, Tennessee January 8, 2010. Presley, who died in August 1977 aged 42, is one of the top earning dead celebrities, bringing in $55 million in 2009 according to Forbes.com and marketed by Elvis Presley Enterprises which entertainment mogul Robert Sillerman revitalized in 2005. His birthday, on January 8, will be marked with a cake-cutting ceremony at his Graceland home, a new exhibit of his costumes, movie marathons, a Facebook application, a cruise later in the year, and a new Jailhouse Rock doll in the Barbie collection. REUTERS

Elvis Presley's estate is turning to a litigation-finance firm to sue Arista Music in Germany for unpaid royalties from ringtones, downloads and apps that feature the icon's hit songs.

UK-based Calunius Capital, the exclusive adviser to a $60 million litigation fund, is backing a lawsuit against Arista Music, formerly RCA Records. The lawsuit alleges that Arista exploited Presley in a 1973 buyout agreement that left the King with only a small share of the revenue from his sound recordings, according to a press release from Elvis Presley Enterprises.

If the estate prevails or the case settles, Calunius Capital will share in the proceeds. Typically, a firm's returns range from 20 percent to 35 percent of any recovered proceeds or two to 2-1/2 times the amount invested, according to Christian Stuerwald of Calunius Capital. If the estate loses, the fund covers the costs, which in Germany include the winning side's attorney's fees.

Plaintiffs are increasingly turning to litigation finance firms, mostly because of high litigation costs. The model is especially attractive for lawsuits in foreign countries where the risks are hard to assess, Stuerwald said.

Elvis Presley Enterprises turned to Calunius Capital because the cost of bringing suit in Germany is high and Calunius has experience with complex suits in that country, said estate spokeswoman Alicia Dean.

Under the 1973 agreement, initiated by RCA and Presley's manager, Colonel Tom Parker, RCA purchased the rights to Presley's back catalog of more than 1,000 recordings for $5.4 million, to be split evenly between Presley and Parker, the suit alleges.

As a result of the contract, Presley received an annual payment of around $10 for the worldwide rights to each song - conspicuously disproportionate to the revenue RCA made from the master recordings, according to the suit.

Sony Music Entertainment, the parent company of Arista Music, declined to comment on the litigation.

Leslie Perrin, the chairman of Calunius, said the German Elvis suit was a carefully chosen investment. Elvis was stationed in Germany as a soldier in the Army, and the country is Elvis crazy, responsible for 10 percent of the world's Elvis sales, Perrin said.

In addition, amendments to German law have extended the term of copyright protection to 50 years from 25 after the artist's death, prolonging the estate's claim to royalties. The suit seeks more than $9 million in unpaid royalties dating back to 2002, in addition to a share of future revenue until 2023 when the copyright expires, according to Perrin.

Under German copyright law, German courts also have the power to undo a disproportionate deal and substitute more equitable terms. The suit seeks equitable remuneration for the Elvis estate.

The Elvis case is the first of Calunius' 20 lawsuit investments to be made public. In most cases, the opposing party is not even aware of Calunius' involvement, Perrin said.

Elvis Presley Enterprises is represented by Boehmert & Boehmert in Berlin.