Patent – Infringement. The Patents Court found that CompactGTL had infringed European Patents (UK) Nos 1 206 508 and 1 206 509, which related to catalysts for use in the Fisher-Tropsch (FT) process, which was used for so-called gas-to-liquid conversion of hydrocarbons. The court also allowed Velocys' application to amend the patents on the grounds of obvious mistake.