Restitutio ad integrum or restitutio in integrum is a Latin term which means restoration to original condition. It is one of the primary guiding principles behind the awarding of damages in common law negligence claims. In European patent law, it also refers to a means of redress available to an applicant or patentee who has failed to meet a time limit in spite of exercising all due care.
Restitutio ad integrum is one of the primary guiding principles behind the awarding of damages in common law negligence claims. The general rule, as the principle implies, is that the amount of compensation awarded should put the successful plaintiff in the position he or she would have been had the tortious action not been committed. Thus the plaintiff should clearly be awarded damages for direct expenses such as medical bills and property repairs and the loss of future earnings attributable to the injury (which often involves difficult speculation about the future career and promotion prospects).
Although monetary compensation cannot be directly equated with physical deprivation it is generally accepted that compensation should also be awarded for loss of amenities, reflecting the decrease in expected standard of living due to any injury suffered and pain and suffering. Damages awards in these categories are justified by the restitutio principle as monetary compensation provides the most practicable way of redressing the deprivation caused by physical injury.
The expression restitutio in integrum is also used in patent law, namely in the European Patent Convention (EPC), and refers to a means of redress available to an applicant or patentee who has failed to meet a time limit in spite of exercising "all due care required by the circumstances". If the request for restitutio in integrum is accepted, the applicant or patentee is re-established in its rights, as if the time limit had been duly met.
According to decision G 1/86 of the Enlarged Board of Appeal of the European Patent Office, other parties such as opponents are not barred from the restitutio in integrum by principle. For instance, if an opponent fails to file the statement of grounds for appeal in spite of all due care, after having duly filed the notice of appeal, restitutio remedies will be available to him or her.