Nick ReeveBy Nick Reeve -- Obtaining patent protection in Europe is currently an expensive proposition. A single European patent can cost between ¥2,500,000 (€15,000) and ¥7,000,000 (€45,000) to file and take through to grant. The final figure depends on many factors, particularly the European states where protection is required, with the fees for translations often taking up the lion’s share. Recent changes in the European Patent System promise to drastically slash these costs. For Japan, the top patent filing nation in the world, these savings could be a huge benefit.