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 and research and reporting in scientific and technological fields; - scientific research services for medical purposes. 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); - Computer (hardware) installation and repair services (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). The above is the content of Class 42 of trademark registration.