Read the Catechism in a Year image
Read the Catechism in a Year
The Seventh Commandment: You shall not steal.

What rules apply to intellectual property?
The misappropriation of intellectual property is theft also.
Not just plagiarism is theft. The theft of intellectual property begins with copying other students' work in school, continues in the illegal taking of materials from the Internet, applies to the making of unauthorized copies or trafficking in pirated copies in various media, and extends to business dealings in stolen concepts and ideas. Every acquisition of someone else's intellectual property demands the free consent and appropriate remuneration of the author or inventor. (YOUCAT question 429)

Dig Deeper: CCC section (2409) and other references here.