What Is Provisional Patent Application?

A provisional patent application is not examined by the USPTO and never becomes a patent on its own — it simply secures a priority date and provides 12 months of 'patent pending' status during which you can refine the invention. To pursue full patent protection, you must file a non-provisional (utility) patent application within that 12-month window. Provisional applications are typically simpler and less expensive ($1,500–$5,000 in attorney fees vs. $10,000–$30,000+ for a full utility patent) and allow inventors to disclose their invention publicly or to investors while protecting their priority date. The quality of the provisional still matters — a poorly written provisional may not adequately support the eventual utility application.

A provisional patent is often the right first step for inventors who want to protect their priority date and test market interest before committing to full patent prosecution. However, the quality of the provisional affects the protection of the eventual utility patent — which is why working with a patent attorney, rather than filing on your own, produces better outcomes.