Class 42 mainly includes theoretical and practical services involving activities in complex fields provided by people, individually or collectively; these services are provided by people such as chemists, physicists, engineers, computer programmers, etc. Provided by professionals. This category includes in particular: - services provided by engineers engaged in assessment, estimation, research and reporting in scientific and technological fields; - scientific research services for medical purposes; - computers for the protection of computer data, personal and financial information and technical services, as well as computer and technical services that monitor unauthorized access to data and information. In particular, this class excludes: - business research and development (Class 35); - word processing and computer file management (Class 35); - finance and financial evaluation (Class 36); - Mining and oil extraction (Class 37); - Installation and repair services of computers (hardware) (Class 37); - Services provided by professionals such as doctors, veterinarians and psychoanalysts (Class 44); —Medical services (Class 44); —Garden design (Class 44); —Legal services (Class 45).