Form 18A for patent of addition The best online course to crack the Patent Agent Exam › Forums › Introduction to Patent Law Course › Form 18A for patent of addition Tagged: Form 18A, patent of addition This topic has 1 reply, 2 voices, and was last updated 3 years, 2 months ago by Mohamed Adnan. Viewing 1 reply thread Author Posts July 5, 2020 at 9:38 pm #10769 SayaniParticipant Can a Request for expedited examination in Form 18A be filed for a patent of addition? July 13, 2020 at 4:15 pm #10833 Mohamed AdnanParticipant Yes you can use form 18A. Patent of addition will have specific reference number to the number of the main patent as it is the modification or improvement to the main invention. prosecution has to happen similar to other applications. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In