Utility Patent

The Federal Circuit held that a state university’s sovereign immunity barred its involuntary joinder as a co-plaintiff, but permitted an exclusive patent licensee to proceed with infringement litigation without the patent owner, because the licensee had identical interests and no risk of multiple su

The Federal Circuit affirmed the PTAB’s invalidation of EMC’s data storage system patents on obviousness grounds — holding that the PTAB properly weighed secondary considerations of non-obviousness including commercial success and industry praise, but found them insufficient to overcome

The Federal Circuit held that Roche’s patents on etanercept (Enbrel) were not subject to obviousness-type double patenting by Immunex, because Roche’s license to Immunex was not an effective assignment — Roche retained substantial patent rights that prevented common ownership.

The Federal Circuit held that direct competitors have Article III standing to appeal an IPR final written decision even without a specific threat of patent infringement litigation, so long as their commercial activities risk infringement and the patent owner has refused to grant a covenant not to su

The Federal Circuit held that claim preclusion and the Kessler doctrine barred PersonalWeb from re-suing Amazon’s customers for infringement of the same patents, after PersonalWeb had previously settled a lawsuit against Amazon itself without expressly reserving its rights to sue downstream customer

The Federal Circuit addressed whether a standard-essential patent holder’s injunction request against a licensee who rejected a FRAND license offer was properly denied — examining the standards for determining whether a license offer was FRAND-compliant and whether refusal to accept a FRAND of

The Federal Circuit held that assignor estoppel bars a patent assignor from challenging claim validity in district court, but does not prevent the same assignor from filing inter partes review petitions at the PTAB — a critical distinction with major implications for post-grant strategy.

The Federal Circuit held that a patent term extension under the Hatch-Waxman Act covers only the active ingredient actually approved by the FDA—and its salts and esters—but does not extend to a metabolite of that ingredient, even if the metabolite is what is pharmacologically active in the body.