Federal Circuit Court Clarifies Patent Eligibility in Constellation v. LG Ruling

WASHINGTON — The U.S. Court of Appeals for the Federal Circuit (CAFC) issued a significant precedential decision on April 28, 2026, that sharpens the line between patent-eligible inventions and abstract ideas. In its ruling in Constellation Designs, LLC v. LG Electronics Inc., the court vacated in part a lower court's decision, providing clearer guidance for inventors and businesses on how to draft patent claims that can withstand judicial scrutiny, particularly in the software and technology sectors. The decision distinguishes between patent-ineligible claims that are merely “results-oriented” and eligible claims that recite a specific structure performing a specific function. This ruling has immediate implications for any company developing and seeking to protect intellectual property, as the defensibility of a patent portfolio can significantly impact a company's valuation and strategic position. For innovative small and mid-sized businesses, intellectual property is often one of their most valuable assets. In our experience, navigating the complexities of patent law is not just a legal exercise but a core component of business strategy. A well-defined and defensible patent can be the key to securing funding, deterring competitors, and ultimately achieving a successful exit. The court’s analysis in Constellation hinges on the two-step framework established by the Supreme Court in Alice Corp. v. CLS Bank Int'l. Under this test, a court first determines if a patent claim is directed to a patent-ineligible concept, such as an abstract idea, a law of nature, or a natural phenomenon. If it is, the court proceeds to step two, which asks whether the claim contains an “inventive concept” sufficient to “transform” the abstract idea into a patent-eligible application. Historically, many software-related patents have struggled at step one. Courts have frequently found claims to be abstract when they describe a desired outcome without specifying the concrete means for achieving it. According to past Federal Circuit rulings, such as Two-Way Media Ltd. v. Comcast, claims that are “result-oriented” and simply use “generic machinery to attain that outcome” are ineligible. Similarly, in Intellectual Ventures v. Capital One, a claim for data mapping was deemed abstract because it was directed to the idea of collecting and manipulating data without detailing a specific, non-conventional method for doing so. The Constellation ruling reinforces this line of reasoning by contrasting these ineligible claims with those that provide what the court terms “specificity and structure.” The decision draws on precedents where claims were upheld because they recited a tangible structure within a particular system to perform a defined function. A classic example cited in related case law involves claims for a graphical user interface that described the specific structure of “notebook tabs” within a spreadsheet to perform the function of navigating a three-dimensional worksheet. This level of detail, the courts have found, moves a claim from the realm of the abstract to a concrete application. The ruling provides a crucial lesson for businesses: patent applications must articulate the “how,” not just the “what.” Simply claiming a function or a result, even a novel one, is insufficient. The patent must describe the specific technological implementation or structure that produces that result. This is particularly critical for companies seeking to protect software-based innovations, where the line between an abstract process and a patentable machine or system can be thin. This legal clarity directly impacts a company's ability to attract investment and grow. A patent portfolio filled with vaguely worded, results-oriented claims is a significant liability during due diligence. Investors and acquirers scrutinize IP for precisely this kind of weakness. We have seen financing rounds and M&A deals complicated or derailed by patents that were ultimately deemed unenforceable. That is why our work in capital raising and investor strategy at C&S Finance Group LLC always involves a hard look at the client's intellectual property. A strong, defensible patent portfolio is a cornerstone of a company's valuation narrative. For guidance on positioning your company's assets for investors, contact C&S Finance Group LLC at csfinancegroup.com. This legal principle is not new but rather a modern application of a long-standing rule. As far back as 1852, the Supreme Court held in Le Roy v. Tatham that claiming a concept without the specific steps to carry it out was impermissible because it would effectively grant a monopoly on an idea itself. The Federal Circuit's recent decisions, culminating in Constellation, reaffirm that patent law is meant to protect tangible inventions, not abstract goals. The distinction between an abstract idea and a patentable invention is a fine one, but this ruling helps clarify that the difference often lies in the details of implementation. For business leaders, the message is that investing in precise, technically detailed patent drafting is not an avoidable expense but a fundamental requirement for building and protecting corporate value. Following this decision, patent examiners at the U.S. Patent and Trademark Office and attorneys in the field will likely apply increased scrutiny to the specificity of claim language. Businesses seeking to file new patents or defend existing ones should review their portfolios in light of this guidance to assess their enforceability and strategic value.