Telecom firm claims ruling will cause major service disruptions

Billionaire promises company lenders not to take payments until business improves

Eureka moment led to service that could improve clinical experience for patients

Denis O’Brien’s telecoms group plans to raise up to $2bn on New York exchange

Planned Digicel IPO not O’Brien’s first

‘There is a myth of the self-made man, the rugged individualist who succeeds in building an empire in spite of the nanny State’

Ding.com enables people in emerging markets who are working abroad to instantly send top up to mobiles back in their home country.

In 2010, an inspector of taxes sought answers to questions about O’Brien’s returns for 1999-2000

Mr Justice Seán Ryan urged to refuse Denis O’Brien’s application for orders requiring the companies provide security for the costs of their action

Irish top-up company Ezetop is head of Deloitte’s Technology Fast 50 for the second year in a row

Esat licence controversy 1995-2011

From Esat to Siteserv, Sean Corkery has spent much of his recent career following in the footsteps of the telecoms billionaire

Persona is suing the State, alleging the licence was awarded as a result of deceit and dishonesty

Businessman to ask High Court to join him as a defendant in case taken against State by consortium challenging award of mobile phone licence to Esat

Professional fees and third-party legal fees make up bulk of costs from January-June 2013