What is the EU patent? What are the EU patent member countries?

What is the EU patent? What are the EU patent member countries? Although the processing procedures and patentability requirements in different countries are similar, it still causes a lot of trouble for applicants because they have to apply from one country to another. EU Patents What is an EU patent? EU patent is the European Patent Convention, that is, EPC system. Countries in EPC system include countries in EU system and countries that are not members of EU. Europe is the birthplace of the world patent system. Venice in 1474 and British monopoly law in 1623 became the earliest patent systems. The development of European patent system is the pioneer and epitome of the evolution of international patent system. What are the EU patent member countries? There are 27 EU patent member countries, namely Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein 1, Lithuania, Luxembourg, Monaco, Netherlands, Poland, Portugal, Romania and Latvia. What is the EU patent? What are the EU patent member countries?