The doctrine of assignor estoppel is a doctrine of United States patent law barring a patent's seller (assignor) from attacking the patent's validity in subsequent patent infringement litigation. The doctrine is based on the doctrine of legal estoppel, which prohibits a grantor from challenging the validity of his/her/its grant.
Graver Tank & Manufacturing Co. v. Linde Air Products Co., 339 U.S. 605 (1950), was an important United States Supreme Court decision in the area of patent law, establishing the propriety of the doctrine of equivalents, and explaining how and when it was to be used.
In international law and business, patent trolling or patent hoarding is a categorical or pejorative term applied to a person or company that attempts to enforce patent rights against accused infringers far beyond the patent's actual value or contribution to the prior art, often through hardball legal tactics. Patent trolls often do not manufacture products or supply services based upon the patents in question. However, some entities which do not practice their asserted patent may not be considered "patent trolls" when they license their patented technologies on reasonable terms in advance.
Free World Trust v Électro Santé Inc, [2000] 2 S.C.R. 1024, 2000 SCC 66, is a leading Supreme Court of Canada decision on patents, namely claim construction and the necessity to identify essential elements and non-essential elements. Along with the related decision, Camco v. Whirlpool (2001), 9 C.P.R. (4th) 129 (SCC), the Supreme Court of Canada rejected the doctrine of equivalents applied in the United States and adopted the doctrine of purposive construction, as originally applied by the United Kingdom House of Lords in Catnic v. Hill & Smith. This was a landmark decision as it resolved the uncertainty in Canadian case law between the two doctrines.
American Well Works Co. v. Layne & Bowler Co., 241 U.S. 257 (1916), was a United States Supreme Court case governing the scope of federal question jurisdiction.
eBay Inc. v. MercExchange, L.L.C., 547 U.S. 388 (2006), is a case in which the Supreme Court of the United States unanimously determined that an injunction should not be automatically issued based on a finding of patent infringement, but also that an injunction should not be denied simply on the basis that the plaintiff does not practice the patented invention. Instead, a federal court must still weigh what the Court described as the four-factor test traditionally used to determine if an injunction should issue.
Graham v. John Deere Co., 383 U.S. 1 (1966), was a case in which the United States Supreme Court clarified the nonobviousness requirement in United States patent law, set forth in 35 U.S.C. § 103.
Mallinckrodt, Inc. v. Medipart, Inc., 976 F.2d 700, is a decision of the United States Court of Appeals for the Federal Circuit, in which the court appeared to overrule or drastically limit many years of U.S. Supreme Court precedent affirming the patent exhaustion doctrine, for example in Bauer & Cie. v. O'Donnell.
Quanta Computer, Inc. v. LG Electronics, Inc., 553 U.S. 617 (2008), is a decision of the United States Supreme Court in which the Court reaffirmed the validity of the patent exhaustion doctrine, and in doing so made uncertain the continuing precedential value of a line of decisions in the Federal Circuit that had sought to limit Supreme Court exhaustion doctrine decisions to their facts and to require a so-called "rule of reason" analysis of all post-sale restrictions other than tie-ins and price fixes. In the course of restating the patent exhaustion doctrine, the Court held that the exhaustion doctrine is triggered by, among other things, an authorized sale of a component when the only reasonable and intended use of the component is to practice the patent and the component substantially embodies the patented invention by embodying its essential features. The Court also overturned, in passing, the part of decision below that held that the exhaustion doctrine was limited to product claims and did not apply to method claims.
Schillinger v. United States, 155 U.S. 163 (1894), is a decision of the United States Supreme Court, holding that a suit for patent infringement cannot be entertained against the United States, because patent infringement is a tort and the United States has not waived sovereign immunity for intentional torts.
United States v. General Electric Co., 272 U.S. 476 (1926), is a decision of the United States Supreme Court holding that a patentee who has granted a single license to a competitor to manufacture the patented product may lawfully fix the price at which the licensee may sell the product.
Fonar Corp. v. General Electric Co., 107 F.3d 1543, was a case decided in 1997 by the United States Court of Appeals for the Federal Circuit concerning source code and the disclosure requirement for software patents.
Fujifilm Corp v. Benun, 605 F.3d 1366 was a case in which the United States Court of Appeals for the Federal Circuit affirmed the judgment made by the United States District Court for the District of New Jersey that the defendants infringed patents owned by Fujifilm Corporation.
Global-Tech Appliances, Inc. v. SEB S.A., 563 U.S. 754 (2011), is a United States Supreme Court case. The case considered whether a party, in order to "actively [induce] infringement of a patent" under 35 U.S.C. § 271(b), must know that the induced act constitutes patent infringement, or whether deliberate indifference to the existence of a patent can be considered a form of actual knowledge. In an 8–1 decision delivered by Justice Samuel Alito, the Court held that induced infringement requires knowledge of patent infringement, but because the petitioners had knowledge of a patent infringement lawsuit involving the respondent and Sunbeam Products over the same invention, the Federal Circuit's judgement that petitioners induced infringement must be affirmed under the doctrine of willful blindness.
Bowman v. Monsanto Co., 569 U.S. 278 (2013), was a United States Supreme Court patent decision in which the Court unanimously affirmed the decision of the Federal Circuit that the patent exhaustion doctrine does not permit a farmer to plant and grow saved, patented seeds without the patent owner's permission. The case arose after Vernon Hugh Bowman, an Indiana farmer, bought transgenic soybean crop seeds from a local grain elevator for his second crop of the season. Monsanto originally sold the seed from which these soybeans were grown to farmers under a limited use license that prohibited the farmer-buyer from using the seeds for more than a single season or from saving any seed produced from the crop for replanting. The farmers sold their soybean crops to the local grain elevator, from which Bowman then bought them. After Bowman replanted the crop seeds for his second harvest, Monsanto filed a lawsuit claiming that he infringed on their patents by replanting soybeans without a license. In response, Bowman argued that Monsanto's claims were barred under the doctrine of patent exhaustion, because all future generations of soybeans were embodied in the first generation that was originally sold.
Evans v. Jordan, 13 U.S. 199 (1815), was a United States Supreme Court case in which the Court held that someone who had copied a patented invention after the patent had expired, and before the patent was restored by a private bill, would be liable for damages for patent infringement for any use continuing after the patent was restored. It was the second published Supreme Court decision on patent law, and the first of four Supreme Court cases dealing with the Oliver Evans flour mill patent. Like other Supreme Court patent cases prior to Evans v. Eaton, however, this case did not deal with substantive patent law, but only with issues of statutory construction and infringement liability.
Google has been involved in multiple lawsuits over issues such as privacy, advertising, intellectual property and various Google services such as Google Books and YouTube. The company's legal department expanded from one to nearly 100 lawyers in the first five years of business, and by 2014 had grown to around 400 lawyers. Google's Chief Legal Officer is Senior Vice President of Corporate Development David Drummond
TC Heartland LLC v. Kraft Foods Group Brands LLC, 581 U.S. ___ (2017), was a United States Supreme Court case concerning the venue in patent infringement lawsuits.
