A patent is a legal mechanism for preventing others without your consent from making, importing or selling that which you have claimed. While some people will respect your patent and wait for it to expire or decide to design round it or ask for a licence, others may infringe. This leads to patent disputes. Not every patent dispute is between a telecoms or pharmaceutical giant. Those parties will always need to retain the most expensive Counsel and largest, specialist law firms. Their shareholders would feel aggrieved if their massive income streams, were not defended by the best available resource.
However, if the income streams generated by your inventions are less mind-boggling, it may still be proportionate to make an infringement complaint. Sometimes a resolution by a judge is the only way to settle a dispute and it may be more informative to do it sooner rather than later.
The Intellectual property Enterprise Court has jurisdiction over patent disputes in the UK and the new unified patent Court may soon be able to provide outcomes which cover more than one European jurisdiction. In these courts, I have right of audience. It is also possible to ask for an opinion from the UK IPO. This can be a very cost-effective way of solving a dispute.