Samesurf v. Intuit — Federal Circuit Affirms PTAB Finding That Browsing Patent Claims Are Obvious

Background

Samesurf, Inc. owns U.S. Patent No. 9,185,145, which covers methods for implementing a real-time, sharable browsing experience between devices connected through a synchronization server. The patent describes a system where a “guest device” can join a browsing session administered by a host, allowing multiple users to view and interact with the same website simultaneously.

Intuit Inc. petitioned for inter partes review (IPR) of all claims of the ‘145 patent. The Patent Trial and Appeal Board found every claim unpatentable as obvious over two prior art references — a WIPO publication called Lebrun and a U.S. patent application publication called Wang. Samesurf appealed, arguing the Board’s decision rested on an incorrect construction of the key claim term “web browsing interaction data.”

The Court’s Holding

The Federal Circuit affirmed the Board’s decision. The central dispute was whether “web browsing interaction data” should be read narrowly — limited to data describing interactions performed by a host device — or broadly to encompass all data related to web browsing interactions, including webpages and partially filled webpages transmitted during a browsing session.

Judge Stark, writing for the panel, sided with the Board’s broader construction. The court found that nothing in the claim language restricts “web browsing interaction data” to exclude data resulting from host device interactions. The patent’s specification, which does not even use the term, describes only an “exemplary” embodiment — too thin a reed to narrow the claims. The court also noted that Samesurf’s narrow reading would illogically limit control of the synchronized browsing session to only the host device, undermining the patent’s own stated purpose.

With the broader construction in place, the prior art clearly disclosed the disputed claim limitation, and the Board’s obviousness finding stood.

Key Takeaways

• Patent holders bear the burden of showing why a broad claim term should be read narrowly. Absent clear lexicography or disclaimer in the specification, courts will give terms their full plain and ordinary meaning.
• A specification that describes a single embodiment as “exemplary” will not support limiting claims to that embodiment alone.
• Claim constructions that would render a patent’s stated purpose inoperable (here, multi-device browsing control) are disfavored.

Why It Matters

This case reinforces that patentees who use broad language in their claims should expect courts to give that language its full scope — even when that breadth makes the claims more vulnerable to prior art challenges. For companies defending IPR proceedings, this case illustrates the strategic value of pushing for the broadest reasonable construction of ambiguous claim terms, which can make it easier to show that prior art discloses the claimed invention. The decision is nonprecedential but consistent with the Federal Circuit’s longstanding approach to claim construction.