Where objective similarities between a copyright work and an allegedly infringing work are sufficiently great and the alleged infringer had an opportunity of access, the onus shifts to the alleged infringer to explain the similarities; formulaic denials that are rejected by the trial judge will not discharge that onus. Indirect copying through oral instructions from an intermediary (not the agent of the alleged infringer) can establish the requisite causal connection for copyright infringement. The manufacture of a three-dimensional object can constitute infringement of a two-dimensional planar elevation drawing where the relevant features of the drawing are reproduced in the constructed object, and it is unnecessary to examine the entire three-dimensional object from all perspectives.
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