(this is a work in progress)
35 U.S.C. §284 Damages.
Upon finding for the claimant the court shall award the claimant damages adequate to compensate for the infringement but in no event less than a reasonable royalty for the use made of the invention by the infringer, together with interest and costs as fixed by the court.
When the damages are not found by a jury, the court shall assess them. In either event the court may increase the damages up to three times the amount found or assessed. Increased damages under this paragraph shall not apply to provisional rights under section 154(d) of this title.
The court may receive expert testimony as an aid to the determination of damages or of what royalty would be reasonable under the circumstances.
(Amended Nov. 29, 1999, Public Law 106-113, sec. 1000(a)(9), 113 Stat. 1501A-566 (S. 1948 sec. 4507(9)).)
This is the default language on damages for patent infringement. The standard is “damages adequate to compensation for the infringement but in no event less than a reasonable royalty for the use made of the invention by the infringer, together with interests and costs...”
Damages can be increased up to three fold by the court.
35 U.S.C. §285 Attorney fees.
The court in exceptional cases may award reasonable attorney fees to the prevailing party.
Court may only award attorney’s fee in exceptional cases.
35 U.S.C. §286 Time limitation on damages.
Except as otherwise provided by law, no recovery shall be had for any infringement committed more than six years prior to the filing of the complaint or counterclaim for infringement in the action.
In the case of claims against the United States Government for use of a patented invention, the period before bringing suit, up to six years, between the date of receipt of a written claim for compensation by the department or agency of the Government having authority to settle such claim, and the date of mailing by the Government of a notice to the claimant that his claim has been denied shall not be counted as a part of the period referred to in the preceding paragraph.
Normally there is a six year statute of limitations.
35 U.S.C. §287 Limitation on damages and other remedies; marking and notice.
(a) Patentees, and persons making, offering for sale, or selling within the United States any patented article for or under them, or importing any patented article into the United States, may give notice to the public that the same is patented, either by fixing thereon the word "patent" or the abbreviation "pat.", together with the number of the patent, or when, from the character of the article, this cannot be done, by fixing to it, or to the package wherein one or more of them is contained, a label containing a like notice. In the event of failure so to mark, no damages shall be recovered by the patentee in any action for infringement, except on proof that the infringer was notified of the infringement and continued to infringe thereafter, in which event damages may be recovered only for infringement occurring after such notice. Filing of an action for infringement shall constitute such notice.
(c)(1) With respect to a medical practitioner’s performance of a medical activity that constitutes an infringement under section 271 (a) or (b) of this title, the provisions of sections 281, 283, 284, and 285 of this title shall not apply against the medical practitioner or against a related health care entity with respect to such medical activity.
Patent owners have to provide notice that they believe a patent is being infringed.
Surgeons are exempted from monetary liability for the infringement of a patented surgical method, as is the medical facility in which the infringement was committed in.
35 U.S.C. §271(e)(4)(C) Infringement of patent
(C) damages or other monetary relief may be awarded against an infringer only if there has been commercial manufacture, use, offer to sell, or sale within the United States or importation into the United States of an approved drug or veterinary biological product. The remedies prescribed by subparagraphs (A), (B), and (C) are the only remedies which may be granted by a court for an act of infringement described in paragraph (2), except that a court may award attorney fees under section 285.
Part of the Bolar amendment in the Hatch Waxman Act,
42 U.S.C. §2184.
Injunctions; Measure of Damages
No court shall have jurisdiction or power to stay, restrain, or otherwise enjoin the use of any invention or discovery by a patent licensee, to the extent that such use is licensed by section 2183 (b) or 2183 (e) of this title. If, in any action against such patent licensee, the court shall determine that the defendant is exercising such license, the measure of damages shall be the royalty fee determined pursuant to section 2187 (c) of this title, together with such costs, interest, and reasonable attorney’s fees as may be fixed by the court. If no royalty fee has been determined, the court shall stay the proceeding until the royalty fee is determined pursuant to section 2187 (c) of this title. If any such patent licensee shall fail to pay such royalty fee, the patentee may bring an action in any court of competent jurisdiction for such royalty fee, together with such costs, interest, and reasonable attorney’s fees as may be fixed by the court.
Damages for patents on nuclear energy
28 U.S.C. §1498
Patent and Copyright Cases
(a) Whenever an invention described in and covered by a patent of the United States is used or manufactured by or for the United States without license of the owner thereof or lawful right to use or manufacture the same, the owner’s remedy shall be by action against the United States in the United States Court of Federal Claims for the recovery of his reasonable and entire compensation for such use and manufacture. Reasonable and entire compensation shall include the owner’s reasonable costs, including reasonable fees for expert witnesses and attorneys, in pursuing the action if the owner is an independent inventor, a nonprofit organization, or an entity that had no more than 500 employees at any time during the 5-year period preceding the use or manufacture of the patented invention by or for the United States. Nothwithstanding  the preceding sentences, unless the action has been pending for more than 10 years from the time of filing to the time that the owner applies for such costs and fees, reasonable and entire compensation shall not include such costs and fees if the court finds that the position of the United States was substantially justified or that special circumstances make an award unjust.
For the purposes of this section, the use or manufacture of an invention described in and covered by a patent of the United States by a contractor, a subcontractor, or any person, firm, or corporation for the Government and with the authorization or consent of the Government, shall be construed as use or manufacture for the United States.
The court shall not award compensation under this section if the claim is based on the use or manufacture by or for the United States of any article owned, leased, used by, or in the possession of the United States prior to July 1, 1918.
A Government employee shall have the right to bring suit against the Government under this section except where he was in a position to order, influence, or induce use of the invention by the Government. This section shall not confer a right of action on any patentee or any assignee of such patentee with respect to any invention discovered or invented by a person while in the employment or service of the United States, where the invention was related to the official functions of the employee, in cases in which such functions included research and development, or in the making of which Government time, materials or facilities were used.
When the infringer is the United States Government, it shall pay reasonable and entire compensation which include reasonable attorney and expert fees if the rights owner is a non-profit organization, independent inventor or an entity with less than 500 employees, unless the Court finds that the United States Government was substantially justified in its position and the action has been pending for less than 10 years.
A contractor or any other entity that commits an infringement with the authorization of the Government shall indemnify the Government in an infringement action.
A government employee may not bring an infringement action against the Government if he ordered, influenced or induced the use of the invention by the Government.
A person may not bring an infringement action against the Government if his invention was made in the course of the official function of his employment when Government time, materials and facilities were used.
H.R. 3590, Affordable Care Act.
Title VII Improving Access to Innovative Medical Therapies
(6)(A) Subparagraph (B) applies, in lieu of paragraph (4), in the case of a patent--
`(i) that is identified, as applicable, in the list of patents described in section 351(l)(4) of the Public Health Service Act or the lists of patents described in section 351(l)(5)(B) of such Act with respect to a biological product; and
`(ii) for which an action for infringement of the patent with respect to the biological product--
`(I) was brought after the expiration of the 30-day period described in subparagraph (A) or (B), as applicable, of section 351(l)(6) of such Act; or
`(II) was brought before the expiration of the 30-day period described in subclause (I), but which was dismissed without prejudice or was not prosecuted to judgment in good faith.
`(B) In an action for infringement of a patent described in subparagraph (A), the sole and exclusive remedy that may be granted by a court, upon a finding that the making, using, offering to sell, selling, or importation into the United States of the biological product that is the subject of the action infringed the patent, shall be a reasonable royalty.
‘‘(C) The owner of a patent that should have been included in the list described in section 351(l)(3)(A) of the Public Health Service Act, including as provided under section 351(l)(7) of such Act for a biological product, but was not timely included in such list, may not bring an action under this section for infringement of the patent with respect to the biological product.’’.
There are obligations to constructively disclose information about patent claims that a biologic drug would infringe. In cases where disclosure is not timely, there are limits on damages for patent holders. Under (B), the limit is a reasonable royalty. Under (C), damages are set to zero.