Infringer

in·fringe  (n-frnj)

v. in·fringed, in·fring·ing, in·fring·es

v.tr.

1. To transgress or exceed the limits of; violate: infringe a contract; infringe a patent.

2. Obsolete To defeat; invalidate.

v.intr.

To encroach on someone or something; engage in trespassing: an increased workload that infringed on his personal life.

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[Latin nfringere, to destroy : in-, intensive pref.; see in-² + frangere, to break; see bhreg- in Indo-European roots.]

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in·fringer n.