How long should I study before I take the exam? This is is a highly subjective question, as every person has different studying techniques and abilities. But, in general, we recommended you study for at least 100 hours before taking the exam. Updated on August 16, 2016 Was this article helpful? Yes No Related Articles What is a Patent Agent? What is a Patent Attorney? What are the “beta” questions on the exam? I need more information about scheduling my exam. How do I reschedule or cancel my exam date? Am I allowed to review my exam if I do not pass?