Linden v. ResMed — Remote-Treatment Patent Fails Section 101

Background

Craig Linden owns U.S. Patent No. 9,639,150, which describes interactive powered displays that can transmit physical actions or stimuli. The patent gives examples such as simulated hand squeezes and remotely controlled medical or rehabilitation devices. Its only independent claim covers a method in which a patient and a treatment provider use networked electronic devices to conduct an audio-video conference, collect a vital sign, form a diagnosis, select a treatment, and send a signal that causes a physical interaction between a display and the patient.

Linden sued ResMed and related companies for infringement in the Southern District of California. ResMed moved to dismiss, arguing that the asserted claims were ineligible under 35 U.S.C. § 101. The district court first allowed Linden to amend his complaint, but it later dismissed the amended complaint with prejudice. It treated claim 1 as representative and found that the claim described the abstract idea of conducting an ordinary doctor visit remotely, using generic devices without a technological improvement or inventive concept.

On appeal, Linden argued that claim 1 should not represent the other asserted claims, that the claimed system used a concrete technological architecture, and that the ordered combination of collecting patient data and remotely delivering treatment supplied an inventive concept.

The Court’s Holding

The Federal Circuit affirmed in a nonprecedential per curiam opinion. It first rejected Linden’s attempt to challenge the district court’s use of claim 1 as representative. His counsel had expressly agreed below that claim 1 was representative, the parties had focused their briefing on that claim, and the complaints themselves called it exemplary. The court therefore held that the contrary appellate argument was waived.

At the first step of the Alice eligibility framework, the panel held that claim 1 was directed to an abstract idea. In substance, the claim took a conventional in-person medical visit and performed it remotely: devices connected a patient and provider, transmitted information, and enabled the provider to diagnose and treat the patient. The requirement for an internet-capable device, a physical output display, and an input transducer did not change that conclusion. The patent described adding communications or remote-control capability to known medical devices, and the claim did not specify a new structure or an improvement in computer operation.

At step two, the court found no inventive concept. Linden characterized the sequence of capturing data, transmitting it, receiving control signals, and implementing those signals through a powered device as a nonconventional arrangement. But those steps merely restated the abstract idea of remote treatment. The claim and specification supplied no concrete implementation detail explaining how the generic components delivered the asserted technological improvement.

The amended complaint did not create a factual dispute that required discovery. Allegations that the combination was unconventional were conclusory, while allegations about advantages over prior systems lacked technical detail. The panel also declined to rely on proposed features such as “device-level control” and “therapeutic execution” because those features were not actually claimed or described in the specification.

Key Takeaways

• A claim that moves a familiar professional activity online remains vulnerable under § 101 when it uses generic networked devices without a specific technological improvement.
• At the pleading stage, an amended complaint must allege concrete technical facts. Repeating that an arrangement is unconventional or inventive will not by itself prevent dismissal.
• A patent owner who agrees that one claim is representative ordinarily cannot reverse position on appeal after the eligibility analysis goes against it.
• Unclaimed implementation details cannot rescue an otherwise abstract claim under either step of the Alice framework.

Why It Matters

The decision reinforces a recurring line between using computers to carry out an existing human practice and improving computer or device technology itself. Telehealth inventions can involve physical equipment and real-world treatment, but those features do not automatically establish eligibility. Claims should identify the particular technical mechanism that changes how the equipment works, rather than describe a desired workflow at a functional level.

The ruling is nonprecedential, but it offers a practical warning for connected-health patent drafting and litigation. Detailed claim language and a specification that explains the claimed technical implementation may be decisive, especially when eligibility is tested on a motion to dismiss before claim construction or expert discovery.