Satius Holding v. Samsung — Scientifically Impossible Patent Claims Fail Enablement

Background

Satius Holding accused Samsung of infringing U.S. Patent No. 6,711,385, which claims a wireless communications apparatus with a coupler that matches the impedance of a transmitter to the characteristic impedance of air. The representative claim described the apparatus as transmitting “electric or electromagnetic signals over air.” The parties agreed that an electric signal, unlike an electromagnetic signal, cannot physically travel through air in the manner the claim required.

After Patent Office reexamination proceedings, the Delaware district court construed the claims and held claims 1, 11, and 18 invalid as indefinite. In the district court’s view, the scientifically impossible electric-signal alternative made the claim nonsensical. Satius appealed, arguing that the language should be understood to describe an electric signal inside the device that is converted before transmission. Samsung defended the judgment and separately argued that the claims failed patent law’s enablement requirement.

The Court’s Holding

The Federal Circuit affirmed the invalidity judgment, but on enablement rather than indefiniteness. Chief Judge Moore’s precedential opinion explained that a claim can be perfectly clear about covering something impossible. Indefiniteness under 35 U.S.C. § 112(b) asks whether a skilled reader can understand the claim’s boundaries with reasonable certainty. Here, the words unambiguously covered two alternatives—electric signals and electromagnetic signals transmitted over air—even though one alternative could not work.

The court refused to rewrite the claim to add an electric-to-electromagnetic conversion step that the drafter had not included. Different language in the claim distinguished signals sent “over” air from signals communicated “to” air, and courts may not repair an inoperable claim simply to preserve validity.

That clarity did not save the patent. Enablement under § 112(a) requires the specification to teach skilled artisans how to make and use the full scope of what is claimed. Because the claim expressly included an undisputed scientific impossibility, no specification could enable that full scope. The panel exercised its discretion to resolve enablement even though the district court had declined to decide it: the issue was fully briefed, presented a legal question, depended on no disputed fact, and remand could not change the result.

Key Takeaways

• A clear claim is not necessarily an enabled claim. Scientific impossibility does not automatically create indefiniteness when the claim’s boundaries remain understandable.
• Enablement must extend across the claim’s entire scope. An expressly claimed alternative that cannot be made or used can invalidate the claim.
• Courts will not insert an unclaimed conversion or processing step to rescue language whose ordinary meaning produces an inoperable embodiment.
• The Federal Circuit may affirm on a fully briefed alternative ground when the record leaves the proper resolution beyond genuine dispute.

Why It Matters

The decision separates two doctrines that are sometimes blurred when patent language appears technically absurd. Indefiniteness is about whether readers can tell what the patent claims; enablement is about whether the patent actually teaches how to achieve it. A drafter can therefore describe an impossible system with fatal precision.

For patent prosecutors and litigators, the practical lesson is to scrutinize every alternative created by words such as “or.” Broad phrasing can capture more accused products, but it also expands what the specification must enable. Once an impossible alternative is expressly inside the claim, expert testimony or a narrowing litigation gloss may not be enough to save it.