The world's top golfer is suing his former management company, Horizon, and being counter-sued by them.
The case concerns McIlroy's contract with Dublin-based Horizon and their two connected companies, the Malta-based Gurteen and Canovan Management.
In court papers in 2013 it was claimed McIlroy signed up with Ridge's agency at an informal meeting on the day of Horizon's Christmas party in 2011 when McIlroy was 22.
McIlroy claims that fees charged by Horizon were almost four times what top ten golfers pay to agents.
The golfer is being counter-sued by Horizon over breach of contract.