Provisional vs utility patent. Priority date vs full examination.
A provisional patent application establishes a priority date inexpensively without starting examination. A non-provisional (utility) application is the "real" application that gets examined and can result in a granted patent. Most inventors file provisional first to lock in the priority date, then file the non-provisional within 12 months when ready for full examination costs.
Start here.
Provisional locks in a priority date. Cheaper, faster to file. No claims required.
Provisional must be followed by non-provisional within 12 months or priority is lost.
Starts the examination process. Includes claims, specification, drawings.
You can mark your product "Patent Pending" once any application is filed.
Provisional: $1,500-$4,000. Non-provisional: $10,000-$30,000+ over examination.
The full picture.
What a provisional does
Establishes a priority date for the invention. Allows "Patent Pending" marking. Provides 12 months to file a non-provisional. Does not get examined; does not become a patent on its own.
What a provisional does not do
Does not get examined. Does not result in a granted patent. Does not protect the invention from copying (until a patent grants).
Requirements for provisional
Specification describing the invention, drawings if relevant, signed cover sheet, filing fee. Claims not required (though they are often included anyway).
Strategic reasons to file provisional first
(1) Locks in priority date before product launch or public disclosure. (2) Cheaper initial filing. (3) Buys 12 months to refine the invention and decide on full filing. (4) "Patent Pending" status for marketing. (5) Provides time to assess commercial viability before incurring non-provisional costs.
Non-provisional requirements
Detailed specification, drawings, claims (the legal scope of protection), oath or declaration of inventor, filing fee. Substantially more involved than provisional.
Examination process
Non-provisional gets assigned to examiner. First office action (often rejection citing prior art). Inventor responds with amendments. Iterations continue until grant or final rejection. 18-30 months typical.
Priority date
Provisional filing date becomes the priority date for the non-provisional, as long as the non-provisional claims priority and the same invention is disclosed in both. Critical for novelty: prior art before the priority date is the "prior art universe" for examination.
Common mistakes
(1) Skipping provisional and missing priority date. (2) Filing non-provisional without lawyer (claims errors are costly). (3) Public disclosure before any application (loses foreign priority in most countries; US has 12-month grace period). (4) Letting the 12-month window lapse without filing non-provisional.
Common questions.
Why file provisional first?
Can I skip the provisional?
What if I miss the 12-month deadline?
Can the non-provisional differ from provisional?
When can I mark "Patent Pending"?
Does provisional give me protection?
Cost?
Should I use a patent attorney?
IP setup, done right.
Trademark filing, copyright registration, attorney-vetted IP assignment, and connection to specialty IP attorneys for patents.
This guide is educational. Specific IP decisions require professional legal advice.
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