Utility Patent Cases
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Utility Patent

Federal Circuit
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CFMT, Inc. v. YieldUp International Corp. — Enablement Standard Requires Only That Skilled Artisan Can Make and Use Invention, Not That Invention Meet Commercial Performance Thresholds

The Federal Circuit reversed summary judgments of invalidity for lack of enablement and unenforceability for inequitable conduct in a semiconductor wafer-cleaning patent case, holding that enablement requires only that skilled artisans be able to make and use the full scope of the claimed invention

Federal Circuit
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Bayer AG v. Housey Pharmaceuticals — Section 271(g) Does Not Protect Research Methods That Generate Information Rather Than Manufacture Products

The Federal Circuit held that 35 U.S.C. § 271(g) — which prohibits importing products made by a patented U.S. process — covers only physical products actually manufactured by the patented process, not information or drug leads identified by using the patented research method.

Federal Circuit
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Schering Corp. v. Geneva Pharmaceuticals — Metabolite of Patented Drug Inherently Anticipated by Prior Art, Cannot Be Separately Patented

The Federal Circuit held that Schering’s patent on a metabolite of Claritin (loratadine) was invalid because the metabolite is necessarily and inherently formed when a patient takes a dose of the previously patented loratadine — establishing that inherent anticipation does not require recognit

Federal Circuit
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SunRace Roots Enterprise v. SRAM Corp. — Claim Differentiation Creates Strong Presumption Against Reading Dependent Claim Limitation Into Independent Claim

The Federal Circuit reversed a declaratory judgment of non-infringement, holding that the doctrine of claim differentiation creates a strong presumption that an independent claim has a broader scope than its dependent claims, and that the narrow limitation in a dependent claim should not be read bac

Federal Circuit
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Omega Engineering v. Raytek Corp. — Prosecution Disclaimer Requires Clear and Unmistakable Surrender; Courts Cannot Add Negative Limitations Unsupported by Intrinsic Evidence

The Federal Circuit reversed summary judgments of non-infringement and invalidity, holding that the district court improperly added a negative limitation to patent claims without intrinsic evidence support, and that prosecution disclaimer applies only when a patentee makes clear and unmistakable sur

Federal Circuit
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Warner-Lambert Co. v. Apotex Corp. — Filing ANDA for Non-Patented Use of a Drug Does Not Infringe a Method-of-Use Patent for a Different, Off-Label Use

The Federal Circuit held that an ANDA applicant seeking approval to sell a generic drug for an FDA-approved use does not infringe a method-of-use patent claiming an unapproved, off-label use of the same drug — establishing important limits on Hatch-Waxman patent infringement actions.

Federal Circuit
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In re Peterson — Overlapping Prior Art Range Creates Prima Facie Case of Obviousness That Inventor Must Rebut with Evidence of Unexpected Results

The Federal Circuit affirmed rejection of claims for a nickel-base superalloy composition, holding that a prior art reference disclosing a range that overlaps a claimed range establishes a prima facie case of obviousness, and that the normal desire of scientists to optimize within known ranges provi

Federal Circuit
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Amgen Inc. v. Hoechst Marion Roussel — Federal Circuit Upholds Amgen’s Foundational Erythropoietin Patents Against Generic and Biosimilar Challengers

The Federal Circuit affirmed the validity of Amgen’s erythropoietin (EPO) patents covering recombinant human erythropoietin, finding the claims satisfied written description and enablement requirements, while remanding certain issues for further consideration.

Federal Circuit
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Madey v. Duke University — Experimental Use Defense to Patent Infringement Does Not Apply to Universities’ Core Research Activities

The Federal Circuit sharply limited the common-law experimental use defense by holding that universities infringe patents when they use patented technology in their research programs, even without profit motive, because such use advances the university’s legitimate business objectives.

Federal Circuit
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In re Cruciferous Sprout Litigation — Recognizing Unknown but Inherent Properties of Known Subject Matter Does Not Create Patentable Invention

The Federal Circuit affirmed invalidation of patents covering methods of preparing cruciferous sprout food products for cancer prevention, holding that the patents were anticipated because the glucosinolate content and Phase 2 enzyme-inducing properties of broccoli sprouts were inherent characterist

Federal Circuit
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Riles v. Shell Exploration and Production Co. — Patent Damages Must Reflect the Value of the Patented Contribution, Not the Entire Accused Product’s Value

The Federal Circuit affirmed infringement of an offshore platform installation patent under the doctrine of equivalents but vacated the damages award, holding that all three damage models presented by the patentee’s expert were legally flawed because they based royalty calculations on the enti

Federal Circuit
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New Railhead Manufacturing, L.L.C. v. Vermeer Manufacturing Co. — Inadequate Provisional Application Disclosure Triggers On-Sale Bar for Later Non-Provisional Patent

The Federal Circuit held that a patent claiming the priority date of a provisional application is invalid under the on-sale bar if the provisional specification failed to adequately describe the claimed invention, because the patent cannot claim priority it did not earn.

Federal Circuit
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Teleflex, Inc. v. Ficosa North America Corp. — Claim Terms Take Ordinary Meaning Unless Specification Shows Clear Disavowal

The Federal Circuit affirmed infringement and reversed the district court’s overly narrow claim construction, reaffirming that claim terms carry their ordinary and accustomed meaning unless the patentee clearly redefined the term or disclaimed certain subject matter in the intrinsic record.

Federal Circuit
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Catalina Marketing International v. Coolsavings.com — Method Claim Preamble Is Not Limiting Unless Patentee Relied on It to Distinguish Prior Art

The Federal Circuit affirmed non-infringement in an e-commerce coupon patent case, holding that preamble language in a method claim does not limit the claim’s scope when the claim body describes a structurally complete invention and the patentee did not rely on the preamble to distinguish prio

Federal Circuit
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CCS Fitness v. Brunswick Corp. — Claim Term “Member” Carries Ordinary Meaning; Not Limited to Single-Component Structure Shown in Patent Drawings

The Federal Circuit reversed a narrow claim construction, holding that the claim term “reciprocating member” in an exercise equipment patent should be given its ordinary meaning encompassing multi-component and curved structures, not limited to the single straight bar depicted in the spe

Federal Circuit
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Johnson & Johnston Associates v. R.E. Service Co. — En Banc Federal Circuit Holds Disclosed-But-Unclaimed Subject Matter Is Dedicated to the Public

In an en banc decision, the Federal Circuit held that subject matter disclosed in a patent specification but not claimed is dedicated to the public and cannot be recaptured through the doctrine of equivalents — patentees who fail to claim a disclosed alternative cannot later assert it as equivalent

Federal Circuit
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Symbol Technologies, Inc. v. Lemelson Medical — Prosecution Laches Can Bar Enforcement of Submarine Patents Delayed Decades

The Federal Circuit held that the equitable doctrine of prosecution laches can bar enforcement of patent claims that issued after an unreasonable and unexplained multi-decade delay in patent prosecution — a landmark ruling against Jerome Lemelson’s famous ‘submarine patent’ strateg

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