The invention relates to a method for producing a coated implant, comprising the steps: a) coating an unstretched implant preform, comprising polytetrafluoroethylene and/or a copolymer comprising tetrafluoroethylene as a monomer unit, with a material, preferably an antimicrobially effective material, and b) stretching the coated implant preform. The invention furthermore relates to an implant produced or producible by the method. The invention also relates to an implant, in particular a prosthesis having a node-fibril structure, comprising expanded polytetrafluoroethylene and/or an expanded copolymer comprising tetrafluoroethylene as a monomer unit, wherein the node-fibril structure has nodes on the surface of the implant, in particular the outer surface, which are fully coated with a preferably antimicrobially effective material.