The main aim of the patent owner or the exclusive licensee is to have the infringer cease producing, offering for sale and putting on the market the infringing product or using the patented process, as the case may be.The infringer does not have to be acting culpably for the patent owner to be able to sue it for cease and desist. It is enough if it is interfering with the owner’s patent rights...

Where an infringer acts with deliberate intent or negligently, the infringed party has a claim for damages.Fault is generally assumed because companies have an obligation to inform themselves about the patent situation in the relevant sector...

Even if claims for damages are statute-barred, the court may grant a claim for unfair enrichment as the infringer has made use of the technical teaching of the patent...

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I highly recommend reading the full article.

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