On the day that Candy Crush Saga developer King floats publicly, expecting raise around $500 million (£302 million), it has been revealed that one of its big rivals has lodged an official claim against the studio's controversial trademark of the word "candy" in app games.

Cut the Rope developer ZeptoLab has submitted a dispute against the trademark in the European Union, which includes the UK. It is looking to cancel the registration as its own game, which predates Candy Cruch Saga, uses the candy motif throughout.

"Candy is an integral part of the Cut the Rope franchise, and we do not support King.com trademarking and preventing others from using it," said ZeptoLab CEO Misha Lyalin.

If successful, you can expect a new flood of candy-based puzzle games to hit app stores again.

King has already withdrawn its application for the trademark in the US, and its registration for the word "saga" has since been suspended.

READ: Candy Crush Saga developer King withdraws 'candy' US trademark filing, won't budge on EU trademark