The first instalment was the highest-grossing animated film of all time, taking $1.29 billion worldwide, and its sequel has already earned $742 million. But now there is something that could stop the runaway success of Disney's smash-hit Frozen franchise: its own popularity.

The South Korean unit of Disney is being taken to court over the ascendancy of its latest box office hit, Frozen 2.

The Public Welfare Committee filed a complaint with the Seoul Central District Prosecutors Office on Sunday demanding an investigation into the company, alleging that it was in breach of monopoly laws in the domestic film market.

The complaint stated that two days after the film was released on November 23, it was being shown on 88 per cent of all screens across the country and that it was shown 16,220 times on that day alone.

“This is a case of one business occupying more than 50 per cent of the market and constitutes a violation of the antitrust law”, the complaint said.