Background
Wi-LAN Inc. is a Canadian patent licensing company that holds patents covering technology used in LTE (4G) wireless standards. Wi-LAN sued Apple for infringement of two patents related to LTE air interface technology — specifically, patents covering how wireless devices allocate and manage radio resources in LTE networks. The asserted patents were declared essential to the LTE standard (standard-essential patents, or SEPs).
At trial in the Southern District of California, a jury found the patents valid and infringed and awarded $85.23 million in damages. Wi-LAN’s damages expert based the award on a royalty rate applied to Apple’s entire revenue from LTE-enabled iPhones — using the full phone as the royalty base. Apple moved to exclude the expert and for judgment as a matter of law, arguing that the expert had failed to properly apportion the royalty base to reflect only the value attributable to the patented technology rather than the overall value of the iPhone. The district court denied the motions and Apple appealed.
The Court’s Holding
The Federal Circuit vacated the damages award and remanded for a new trial on damages. Judge Hughes held that Wi-LAN’s expert failed to properly apportion the royalty base, as required by Federal Circuit law when a patent covers only a component of a multi-component product. The apportionment requirement exists because a patentee is only entitled to compensation for the value its patent contributes to the accused product — not the entire product’s value, which includes unpatented features and components.
Wi-LAN’s expert attempted to use the entire market value rule — a limited exception that permits use of the full product as the royalty base when the patented feature drives demand for the entire product. The court found this approach unjustified here: LTE capability is one of many features in an iPhone, and there was no evidence that consumers bought iPhones primarily because of the specific LTE resource allocation technology covered by Wi-LAN’s patents. Without that showing, the expert was required to first isolate the value of the patented features from the broader LTE standard and then from the device as a whole before applying a royalty rate.
Because the expert’s methodology was legally flawed and the damages award could not stand, the court vacated and ordered a new trial limited to damages.
Key Takeaways
- Damages experts in patent cases must apportion the royalty base to reflect only the incremental value attributable to the patented features, not the value of an entire product containing many unpatented components.
- The entire market value rule — which allows using full product revenue as the base — is a narrow exception that applies only when the patented feature is the primary driver of consumer demand for the whole product.
- Standard-essential patent holders face a particularly demanding apportionment challenge: they must isolate the value of their specific patents from the broader standard, and then from the accused device.
- Courts will exclude or discount expert testimony that applies a royalty rate to an unapportioned base without adequate economic justification.
Why It Matters
The Apple v. Wi-LAN decision is part of an ongoing Federal Circuit effort to rein in damages awards that are inflated by improper use of total product revenue as the royalty base. For the smartphone and wireless industries, where devices incorporate hundreds of patented technologies, this is a recurring battleground: patent holders want to apply royalty rates to high-value products; defendants insist that damages must track only the value of the specific innovation claimed.
The ruling reinforces that standard-essential patent holders face a two-step apportionment burden: first, isolate the value of the specific SEP from the broader standard; second, isolate the contribution of that standard feature from the overall value of the accused device. This framework significantly constrains damages calculations for SEP holders suing device makers, and it has important implications for how wireless, video, and other standardized-technology royalties are negotiated and litigated.