“The court challenged this provision and ‘warned of the danger of stipulating noninfringement based on a district court’s claim construction without giving the precise basis for noninfringement.'”
The US Court of Appeals for the Federal Circuit (CAFC) on Monday issued a precedent decision that reverses and remands a district court’s ruling on patent infringement in a lawsuit between Amazon and AlterWAN. A circuit judge reversed the judgment finding Amazon did not infringe her two AlterWAN patents on Internet network technology.
Under two of the district court’s claim constructions, the parties entered into a noninfringement provision. However, AlterWAN has appealed this action, challenging the district court’s interpretation of two of his terms relating to patent claims.
The CAFC found this provision vague and lacking in detail, so it reversed the decision and remanded it to the district court.
“We will reverse the judgment and remand it to the district court to clarify the parties’ noninfringement position and take further steps to determine whether a noninfringement provision is possible in the circumstances of this case. No,” the judge wrote.
The court challenged this provision and “warned of the danger of stipulating noninfringement based on a district court’s claim construction without giving the precise basis for noninfringement.”
Claim Construction and Appeal
The two patents at issue are AlterWAN’s US Patent Nos. 8,595,478 and 9,015,471, which relate to improving the implementation of wide area networks over the Internet. AlterWAN filed a patent infringement lawsuit against Amazon and Amazon Web Services in the United States District Court for the District of Delaware in August 2019.
After the summary judgment hearings, AlterWAN and Amazon filed patent noninfringement terms and orders. This provision states:[u]Under the court’s construction of “cooperative service provider” and “unblocked bandwidth,” Amazon did not and did not infringe the ‘478 and ‘471 patents. “
Then, in January 2022, AlterWAN appealed to the CAFC. AlterWAN challenged the court’s interpretation of two of her terms, “cooperative service provider” and “unblocked bandwidth,” but the district court ultimately upheld Amazon’s interpretation of both terms. .
AlterWAN also challenged Section 3, “Routing,” which was not part of the provision, but the district court provided guidance at the summary judgment hearing and found it part of the provision. argued that it should be addressed by the CAFC even though it was not. Protect judicial resources. “
Unable to review
AlterWAN identified what was at issue in the district court’s ruling, but the Federal Circuit said the provision did not indicate which claims of the ‘471 patent were at issue on appeal. As a result, the court said it could not substantively argue the construction of the claims. “Under the circumstances of this case, this provision does not provide sufficient detail to resolve the claim construction issues presented on appeal,” the Circuit Judge wrote.
The judge said various factors related to claim construction were unclear. Additionally, the CAFC said the lack of agreement between his two parties on the matter made the matter more unclear.
“It has become clear that the parties have significant disagreements over the effect of the provision. The disagreements make it impossible for this court to consider the judgment,” the judge said. I am writing.
The confusion was compounded when AlterWAN argued that the inclusion of “Internet availability language” could prove infringement under the district court’s construction, according to the judge.
In summary, the Court found that “the parties failed to adequately explain how the claim construction ruling relates to the asserted system,” and therefore the court was unable to determine noninfringement. bottom.
explanation from the court
The court could not rule on non-infringement, but did clarify what is meant by “unblocked bandwidth.”
A circuit court judge said the district court’s interpretation of the term “is not a reasonable construction…because it requires the impossible.”
In an attempt to counter this, Amazon previously cited Chef Am., Inc. vs. Lamb-Weston, Inc., “[c]We may not rewrite any claim to make it workable or to maintain its validity. “
In that case, the CAFC refused to replace one term in the patent claims. This is because claims as written lead to “absurd results”, yet they were clear.
However, the Circuit Judge wrote that the case “does not need to deviate from common sense in claim construction.”
In the case of AlterWAN’s patent and the district court’s construction of “non-blocking bandwidth,” the CAFC found that “the claim language itself does not expressly require bandwidth to be available even if the Internet is inoperable.” ‘ said.
The CAFC didn’t provide a detailed definition of the term “non-blocking bandwidth” other than that you don’t need the bandwidth when the Internet is down. Instead, the CAFC remanded the case to the district court for appropriate amendment on remand.
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Author: Singlas
