Where additional tasks have been given to the European Patent Office under Article 143, the group of Contracting States shall bear the expenses incurred by the Organisation in carrying out these tasks. Where special departments have been set up in the European Patent Office to carry out these additional tasks, the group shall bear the expenditure on staff, premises and equipment chargeable in respect of these departments. Article 39, paragraphs 3 and 4, Article 41 and Article 47 shall apply mutatis mutandis.