Our Patent Case Summaries provide a weekly summary of the precedential patent-related opinions issued by the Court of Appeals for the Federal Circuit and the opinions designated precedential or informative by the Patent Trial and Appeal Board.
Sound View Innovations, LLC v. Hulu, LLC
No. 24-1092 (Fed. Cir. (C.D. Cal.) Jan. 29, 2026). Opinion by Chen, joined by Prost and Wallach.
Sound View owns a patent directed to methods and apparatuses that reduce network latency while increasing the quality of media streamed to devices of end-user customers. Sound View sued Hulu for infringement of the patent.
The case eventually narrowed to focus on method claim 16. In a summary judgment ruling, the district court made claim construction determinations that (1) the first limitation of claim 16 must be performed before the second limitation, and (2) claim 16 requires a specialized “buffer,” construed to mean “short term storage associated with said requested SM object.” The district court found that the accused products do not infringe claim 16 as construed, and thus entered summary judgment of noninfringement. Sound View appealed.
The Federal Circuit ruled that the district court erred in its construction of the claimed “buffer.” But the Federal Circuit nonetheless affirmed because the district court “correctly construed claim 16 to require a specific order of operation,” which resolved the question of infringement.
As to the construction of the term “buffer,” the Federal Circuit held that claim 16 does not require a specialized buffer as the district court determined. “Nothing in the claim language describes the buffer as a specialized buffer that must be associated with only one SM object,” and likewise “the specification does not clearly indicate a deviation from the ordinary and customary meaning of the term ‘buffer.’” The Federal Circuit also noted that Hulu’s discussion of a statement in the prosecution history “does not move the needle.” The district court therefore erred in narrowing the claimed buffer to be a specialized buffer.
Next, the Federal Circuit addressed whether claim 16 requires an order of steps, and the court concluded that it does. As the Federal Circuit explained, “implicit ordering [of steps in a method claim] exists when there are inherent logical dependencies or functional relationships between the recited steps of a method claim.” Applied here, the court held that “both the grammar and logic of claim 16 require the first limitation to be performed before the second.” The first limitation recites “receiving a request for an SM object,” and the second limitation recites allocating a buffer to cache “said requested SM object.” The court ruled that “because the second limitation expressly references ‘said requested SM object,’ it necessarily depends on the first limitation having been performed.”
The Federal Circuit thus affirmed because there was no dispute that Hulu’s accused system did not perform the receiving and allocating steps in the required order.