Defensive Publication [Patent]: A Comprehensive Guide to Its Legal Definition

Definition & Meaning

A defensive publication is a type of published patent application that is issued by the U.S. Patent and Trademark Office (PTO). Unlike regular utility, design, or plant patents, a defensive publication is granted to inventors who choose not to pursue patent protection for their inventions. This publication serves a specific purpose: it prevents others from patenting the same invention, design, or plant. Defensive publications were primarily issued between April 1968 and May 1985, after which they were replaced by Statutory Invention Registrations. In the publication number, defensive publications are designated with the letter "T."

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Real-world examples

Here are a couple of examples of abatement:

Example 1: An inventor develops a new type of bicycle design but decides not to pursue a patent. They file a defensive publication to ensure that no one else can patent their unique design.

Example 2: A company creates a novel method for recycling plastics. Instead of patenting the method, they publish it as a defensive publication to prevent competitors from claiming the same method as their own. (hypothetical example)

Comparison with related terms

Term Definition Key Differences
Defensive Publication A published patent application that prevents others from patenting the same invention. Does not provide full patent rights; serves only as a defensive measure.
Utility Patent A patent granting the right to exclude others from making, using, or selling an invention for a limited time. Provides full patent rights and protection; requires maintenance fees.
Statutory Invention Registration A type of patent that provides public disclosure of an invention without granting exclusive rights. Similar to defensive publication but established later and under different regulations.

What to do if this term applies to you

If you have an invention that you wish to protect from being patented by others but do not want to pursue a full patent yourself, consider filing a defensive publication. You can find templates and guidance on platforms like US Legal Forms to assist you in the process. If your situation is complex or you have specific legal questions, consulting a legal professional is advisable.

Quick facts

Attribute Details
Issued by U.S. Patent and Trademark Office
Timeframe of issuance April 1968 to May 1985
Designation Letter "T" in publication number
Protection type Defensive only; does not grant exclusive rights

Key takeaways

Frequently asked questions

A defensive publication is a published patent application that prevents others from patenting the same invention without granting full patent rights to the inventor.