Last week, in In Re Roslin Institute, the U.S. Court of Appeals for the Federal Circuit held that cloned cattle, sheep, pigs and goats are non-patent eligible subject matter under 35 USC § 101. While the result that these cloned animals cannot be patented may not be surprising, the basis for the court’s finding–that the claimed subject matter…

The USPTO has issued new Guidance For Determining Subject Matter Eligibility to help examiners apply the principles of Myriad and Prometheus to any claim “reciting or involving laws of nature/natural principles, natural phenomena, and/or natural products.” The guidelines focus on a “signficantly different” test, and include lists of factors that weigh towards and against patent eligibility. The guidelines also include several…

In a divided en banc decision, the U.S. Court of Appeals for the Federal Circuit affirmed the district court’s holding that the claims at issue in CLS Bank v. Alice Corporation are invalid under the “abstract idea” exception to 35 USC § 101. While a majority of the judges agreed that the method and computer-readable medium claims are invalid, they disagreed as to why. Further, the court was evenly split as to whether the systems claims are invalid. (With no majority agreement on that issue, the district court decision is affirmed). Even if this case makes its way to the U.S. Supreme Court, patent-eligibility will remain a murky area of U.S. patent law for the foreseeable future.