Repair vs. Reconstruction

The repair vs. reconstruction doctrine determines whether a third party can replace a worn or spent component of a patented product without infringing the patent. Under patent exhaustion, an authorized sale of a patented product exhausts the patent owner's rights in that product — the purchaser and downstream owners may use, repair, and resell the product freely. However, exhaustion exhausts rights in the PRODUCT SOLD, not the right to make new copies. If a repair goes so far as to reconstruct the entire patented combination — essentially making a new patented product — the reconstruction constitutes infringement even after an authorized first sale. The line between 'repair' (permissible) and 'reconstruction' (infringement) is one of the most fact-specific analyses in patent law.

Aro Manufacturing Co. v. Convertible Top Replacement Co.: Two Supreme Court decisions (Aro I, 1961; Aro II, 1964) are the landmark cases on repair vs. reconstruction. ARO I (1961): Ford sold licensed cars incorporating a patented convertible top mechanism (the patent claimed the combination of the top fabric + supporting structures as a whole). When car owners replaced the worn fabric top (an unpatented component), Aro sold replacement fabric. The Supreme Court held: replacing an unpatented component of a patented combination is REPAIR, not reconstruction — the patent covered the combination, not the individual element; replacing one component did not make a new combination. KEY RULE from Aro: even the patented element can be replaced as 'repair' if the replacement restores the original patented combination to working order rather than creating a new patented combination. ARO II (1964): addressed contributory infringement — a party who sells components to enable repair (not reconstruction) is not a contributory infringer.

Courts apply a totality-of-the-circumstances analysis, weighing multiple factors: (1) THE NATURE OF THE ELEMENT REPLACED — replacing an unpatented component is more likely repair; replacing a patented staple article that embodies the entire patent invention is more likely reconstruction; (2) WHETHER THE SPENT ELEMENT IS THE ESSENTIAL FEATURE of the patent — if the spent/worn component constitutes the heart of the patented invention, replacement may be reconstruction; (3) RELATIVE COST — if the replacement component costs as much as the entire patented combination, it may amount to making a new combination; (4) LIFE OF THE REPLACED COMPONENT — a component expected to have a shorter life than the overall combination (and contemplated as replaceable) is more likely repaired, not reconstructed; (5) HOW THE PATENT IS CLAIMED — a patent claiming a combination where individual components are unpatented leaves more room for repair; a patent claiming the individual component itself makes replacement of that component potentially infringement. No single factor is dispositive.

Yes — patent exhaustion extends to downstream repair activities. When a patent owner makes an authorized sale (directly or through a licensed manufacturer), the purchaser and all subsequent owners (including third-party repair services) can use, repair, and resell that product without the patent owner's permission. This means: (1) Third-party repair shops can repair a patented device without a patent license; (2) Owners can replace worn components of a patented combination (within the repair doctrine); (3) Refurbishers can restore a patented product to working condition. The limits: exhaustion does not permit 'making' new patented products — reconstruction crosses into making a new article. Quanta Computer v. LG Electronics (S.Ct. 2008) reinforced that exhaustion is broad and cannot be limited by unilateral post-sale restrictions imposed by the patent owner — conditional sales (with contractual use restrictions that predate the sale) can limit downstream use contractually, but do not preserve patent rights in the sold article.

Printer cartridge and toner refilling cases illustrate the repair/reconstruction doctrine in consumer products. Typical fact pattern: a patent owner sells a printer and separately sells ink cartridges. When the ink runs out, a refiller purchases spent cartridges, refills them with ink, and resells them. Courts have analyzed whether refilling = repair (permissible) or reconstruction (infringement). Factors courts consider: (1) Is the structural components of the cartridge (the patented invention) intact or replaced? Refilling ink into an intact cartridge is more like repair; (2) Does the patent claim the ink itself or the structural combination? If the patent covers the ink formulation, selling new ink for cartridges could separately infringe the ink claims; (3) What is the contemplated life of the cartridge? — a cartridge designed for single use may be different from one designed for refilling. Lexmark International v. Impression Products (S.Ct. 2017): the Supreme Court reinforced exhaustion principles — once a product is sold, exhaustion is absolute and contract-based post-sale restrictions (e.g., 'single use only' labels) cannot revive patent rights in the sold article (though they may support breach of contract claims).