Patently offensive is a term used in United States law regarding obscenity under the First Amendment.
The phrase "patently offensive" first appeared in Roth v. United States, referring to any obscene acts or materials that are considered to be openly, plainly, or clearly visible as offensive to the viewing public. The Roth standard outlined what is to be considered obscene and thus not under First Amendment protection. The Roth standard was largely replaced by the Miller test established by Miller v. California (1973).
According to the "Roth Standard" a work is obscene if:
The dominant theme of the material taken as a whole appeals to a prurient interest in sex,
The material is patently offensive because it affronts contemporary community standards relating to the description or representation of sexual matters,
The material is utterly without redeeming social value
Whether the average person, applying contemporary community standards, would find that the work, taken as a whole, appeals to the prurient interest,
Whether the work depicts/describes, in a patently offensive way, sexual conduct or excretory functions[2] specifically defined by applicable state law,