Perris v. Hexamer,
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99 U.S. 674 (1878)
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U.S. Supreme Court
Perris v. Hexamer, 99 U.S. 674 (1878)
Perris v. Hexamer
99 U.S. 674
The right of an author ore publisher, under the copyright law, is infringed only when other persona produce a substantial copy of the whole or of a material part of the book or other thing for which he secured a copyright. Where, therefore, the owner of a copyright for maps of certain wards of
"the City of New York, surveyed under the direction of insurance companies of said city, which exhibit each lot and building, and the classes as shown by the different coloring and characters set forth in the reference,"
brought his bill to restrain the publication of similar maps of the City of Philadelphia, held that the bill could not be sustained.
The facts are stated in the opinion of the Court.