Final answer:
Patent owners can opt to license the patent to the infringer as an alternative to lengthy and costly litigation, offering a potentially more amicable and economical solution.
Step-by-step explanation:
Patent infringement suits can indeed be lengthy and costly. However, patent owners have several options to seek redress for infringement aside from litigation. One alternative option for patent owners is d) Licensing the patent to the infringer. This approach allows the infringer to legally use the patented invention in exchange for royalties or other agreed-upon compensation, and it can be a more amicable and cost-effective solution compared to a prolonged court battle. The licensing route not only provides a revenue stream for the patent holder but also avoids the adversarial nature and uncertainty of litigation.