Sugababes and Mutya Buena in trademark fight

Sugababes, the pop group, are embroiled in a legal battle over rights to the band's name with former member Mutya Buena.

Sugababes and Mutya Buena in trademark fight
Keisha Buchannan, Mutya Buena and Heidi Range - the Sugabaes in 2005

Buena, one of the original members of the group, filed an application with the European Trademarks Authority (ETA) in March 2009 to register the name.

The singer, who is working on her second solo album, said the Sugababes had "ended" when the last of the founding members, Kiesha Buchanan, quit the band last year.

The current three band members – none of whom was part of the original line-up – and Island Records, their record label, have responded to the trademark application by submitting a notice of opposition.

Heidi Range, one of the current members, told the BBC that the rights to the name are owned by Island Records.

If Buena is granted the trademark, it could pave the way for her to use the band name on merchandise including CDs, DVDs and books.

The company, which is owned by Universal, said in a letter to the ETA that because of the "similarity of the goods and services" provided by Buena, "there is a likelihood of confusion on the part of the public."

The band's line-up has changed completely since it was formed by Siobhan Donaghy, Buena and Buchanan in 1998.

Donaghy was replaced by Range in 2001 and Amelle Berrabah joined in 2005 after the departure of Buena. The last of the original Sugababes, Buchanan, left the band last year to be replaced by Jade Ewen.