Yes, you can file a trademark application yourself, but it is often advisable to seek the expertise of an intellectual property attorney, who can assist you in preparing the filing and represent you, on the basis of a power of attorney, in completing the formalities with the Industrial Property Division. Indeed, analyzing the availability (prior art search) and validity of a sign, drawing up a list of goods and services in compliance with the Nice Classification, making appropriate use of the Vienna Classification for figurative elements, and defining a protection and exploitation strategy all require certain legal and practical skills. A poorly prepared application could therefore have a detrimental impact on the scope and strength of your trademark protection, and in the event of irregularity, could delay the proceedings or even be rejected. In the case of an international extension, the quality of the first filing in the Principality of Monaco is decisive for the granting of protection by foreign Offices.