A Delaware judge has confirmed the $12.9 million verdict against Caterpillar in favor of machinery manufacturer Wirtgen, following allegations that Caterpillar infringed on five of Wirtgen’s road-milling machine patents. Caterpillar’s efforts to overturn the decision were based on equitable defenses, asserting that the patents were unenforceable due to an unreasonable delay in the patent application process. However, these defenses were rejected by the court.
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