The legal standards and rules for determining fair use or public domain content may seem confusing. These charts should help give you a better idea of the likelihood of whether your use of someone's work will run afoul of copyright law.
Does Your Use of the Work Constitute Fair Use?
The closer your answer is Yes to the following questions, the more likely your use is fair use. The right column illustrates examples of factors that make a finding of fair use more likely vs. copyright infringement.
Factors
Examples
Are you creating something new?
Including excerpts in a commentary piece about the book vs. copying a book word-for-word
Is the copyrighted work factual?
Biography vs. work of fiction
Is the portion of the work used small in amount and significance in relation to the entire work?
Two sentences from a novel vs. a chapter of the book that goes to the heart of the story
Does your use have little or no market impact on the copyrighted work?
Excerpting from a travel book on Rome for a book review vs. copying an entire section for a new travel book on Rome
Publication Date
Public Domain?
Works published in the U.S. before 1923
Yes.
Works published in the U.S. in 1923 through 1963
Yes, if the copyright was not renewed during the 28th year after the work was first published.
Works published in the U.S. in 1964 through 1977
No. Automatic copyright renewal protects the work for 95 years.
Works published in 1978 or later
No. Work is protected by copyright for the life of the author plus 70 years. (a longer copyright term may apply)
Works published by the U.S. Federal Government
Yes, regardless of publication date.
Public Domain: Additional Factors and Copyright Renewal
Although the above chart provides helpful guidance in determining whether a work is in the public domain, there are a few additional steps that will help you in this analysis for published works.
Unpublished Works
The protection of life of the author plus 70 years also applies to unpublished works. You should note, however, that if an unpublished work is created before 1978, and subsequently published between 1978 and 2003, the copyright lasts through 2047, no matter when the author died.
Getting Legal Help with Copyrights
Determining whether a piece of work is in the public domain can be tricky. Let an experienced business and commercial law attorney sort through the details. Let a legal expert help save you valuable time, effort, and potentially thousands of dollars on costly litigation should you inadvertently engage in copyright infringement.