Almost every blockchain or cryptocurrency patent is, in substance, a software patent: it claims a method a computer or network of computers performs. That places it squarely inside the most contested area of U.S. patent law, subject-matter eligibility under 35 U.S.C. 101. Section 101 states that a patent may be obtained by “whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof.” The statute reads broadly, but the courts have layered judicial exceptions on top of it, and a distributed-ledger claim has to clear them before novelty (102) or obviousness (103) is ever reached.

The controlling framework comes from the Supreme Court's decision in Alice Corp. Pty. Ltd. v. CLS Bank International, 573 U.S. 208 (2014) — itself a case about a computerized financial-settlement scheme, which is why it matters so directly to blockchain. The USPTO restates that framework for examiners in MPEP 2106, describing three categories of subject matter the courts have placed outside the reach of a patent:

“abstract ideas, laws of nature and natural phenomena (including products of nature).”— MPEP § 2106, source

Software methods almost always run into the first of these, the abstract-idea exception. The MPEP frames the analysis as a two-step inquiry. As the Office describes it, examiners are to “determine whether a claim is directed to a judicial exception (Step 2A) and to then evaluate if additional elements of the claim provide an inventive concept (Step 2B) (also called ‘significantly more’ than the recited judicial exception).” A claim does not become ineligible merely because it touches an abstract idea; the MPEP is explicit that ineligibility attaches only when a claim recites a judicial exception “unless the claim as a whole includes additional limitations amounting to significantly more than the exception.”

How the two-step reaches a distributed-ledger claim

For a blockchain claim, Step 2A is where the fight usually happens. Stripped to its idea, “recording a transaction on a ledger,” “settling an obligation between two parties,” or “verifying that a payment occurred” are the kinds of long-standing commercial practices courts have repeatedly treated as abstract. Alice itself concerned intermediated settlement, a financial concept. So a claim drafted at that level of generality — do the familiar thing, but “on a blockchain” or “using a distributed ledger” — is exposed, because reciting a generic computer or network as the tool for an abstract idea does not, under the MPEP and Alice, supply the inventive concept Step 2B looks for.

What can carry a claim through is specificity about a technical mechanism. The MPEP's Step 2B asks whether the additional elements, individually and as an ordered combination, add “significantly more” — an improvement to the functioning of a computer or to another technology, rather than the bare instruction to apply an idea on existing machinery. In the blockchain context, that tends to mean claim limitations describing how the system achieves something a conventional database could not: a particular consensus or threshold-signature interaction among nodes, a specific cryptographic construction, a concrete data structure such as a hash-linked chain of blocks, or a defined protocol exchange. The closer the claim sits to the cryptographic and distributed-systems machinery, the more it reads as a technical solution; the closer it sits to “use a computer to do business,” the more it reads as an abstract idea with conventional components bolted on.

What this means for reading a crypto patent

Two practical points follow for anyone evaluating a blockchain patent. First, “patented” is not a synonym for “novel” or “eligible in every claim” — eligibility is decided claim by claim during examination, and an issued grant means the examiner was persuaded that at least the allowed claims cleared the two-step on the record before them. It does not foreclose a later eligibility challenge in litigation or post-grant review, where a court applies the same Alice framework de novo to the actual claim language. Second, the eligibility question is independent of whether the invention is new. A claim can be perfectly novel over the prior art and still fall at Step 2A if it is directed to an abstract idea; conversely, clearing 101 says nothing about whether the claim is also novel under 102 and non-obvious under 103. The three inquiries are separate gates.

It also helps to see where the line has been drawn in practice. The Federal Circuit has repeatedly held that claims directed to an improvement in computer functionality — a better way for machines to operate, rather than a familiar task automated — can be eligible at Step 2A itself, while claims that simply invoke a computer as a tool to carry out an abstract method tend to fail. For a distributed-ledger claim, that framing is the whole game: a claim that improves how a network of nodes reaches agreement, secures keys, or verifies a proof reads as a technical improvement, whereas a claim that takes a known commercial transaction and recites doing it “on a blockchain” reads as the abstract idea with a generic ledger appended. The MPEP's two-step does not ask whether blockchain is impressive; it asks whether the claim, as a whole, is directed to a specific technical solution or to an idea implemented on conventional components. That is a question only the claim language can answer, which is why two patents with nearly identical titles can land on opposite sides of the line.

That is why claim-literal reading matters in this sector. The eligibility of a blockchain patent is not determined by the technology label in its title but by what the independent claims actually recite and whether those recitations describe a specific technical implementation or a familiar commercial idea performed by generic computers. The USPTO's own published standard — the two-step of MPEP 2106, anchored in Alice and in the text of 35 U.S.C. 101 — is the lens the Office and the courts both use, and it is the right lens for a reader to apply when a press release announces that a method has been “patented on the blockchain.”