Okay, I'm at work and I'm having my coffee, so I'll take a little time to explain infringement analysis.
Copyright protection is authorized in Article I, Section 8 of the Constitution, and reserves exclusive rights to authors (and inventors) in their works of authorship (and inventions) for limited periods of time.
Copyright is infringed when one of the reserved rights of copyright is violated. These are found in 17 USC § 106. I'll address only the right to make copies.
Copyright is infringed when someone copies a protected work. Period. As I've noted, there is no magic quantum that can be copied before liability attaches -- if you've copied, you've infringed.
Copyright infringement requires proof of two things: ownership of a valid copyright and unlawful copying by the defendant.
Truncated Quote.