They rank among the largest – and most powerful – businesses in the entertainment industry, controlling tens of thousands of cinema screen around the world. Combined, Cinemark, AMC Entertainment and Regal Cinemas have revenues of more than $10 billion. For the last nine months, they have been pursed by a US technology company who is claiming they are in breach of patent infringements. Now, however, the drama is coming to Ireland. Papers were lodged in the Irish courts in recent days stating seeking permission to obtain evidence from Irish witnesses. Documents show that they are seeking foreign tribunal evidence, a…