At a Glance
The Patents at Stake
An 'agile network protocol' for establishing a secure communications link automatically — a VPN created on demand based on a domain-name lookup. VirnetX asserted that Apple's VPN On Demand and FaceTime set up secure connections the same way.
A system where requesting a secure domain name transparently triggers a secure, encrypted connection. VirnetX argued FaceTime's call-setup — resolving the other party and opening a secure channel — practiced this method.
The Timeline
2010
VirnetX sues Apple
VirnetX — a patent-licensing company with no products, holding secure-communications patents that trace back to government contractor SAIC — sues Apple in the Eastern District of Texas over FaceTime and VPN On Demand.
2012
First verdict: ~$368 million
An East Texas jury finds Apple infringed and awards roughly $368 million. It's the opening round of what becomes one of the longest-running patent fights in tech.
2013
Apple re-engineers FaceTime
To design around the patents, Apple reroutes far more FaceTime calls through relay servers instead of direct peer-to-peer connections. The change raises Apple's costs and is widely blamed for a stretch of FaceTime connection problems — a rare case of patent litigation visibly altering a product millions use.
2016–2020
Retrials keep landing for VirnetX
Through retrials and appeals the verdicts keep coming — around $302 million, lifted toward $440 million with enhancements, and a 2020 jury award of roughly $503 million. Apple appeals each time.
2010s–2023
The patent office fights back
In parallel, Apple and others attack the patents through inter partes review at the PTAB. Over years the Patent Trial and Appeal Board and the Federal Circuit cancel key VirnetX claims as unpatentable — eventually unwinding much of what the Texas juries had awarded.
The Outcome
Win the trial, lose the patent.
For most of the 2010s VirnetX looked like the rare NPE that simply kept winning — verdict after verdict against the most valuable company on earth, and a forced redesign of FaceTime to show for it. Apple paid lawyers, paid relay-server bills, and kept appealing.
But the trial track and the patent-office track ran in opposite directions. While juries upheld the patents, inter partes review kept chipping away at the claims, and by the early 2020s the Federal Circuit had affirmed the cancellation of key claims — collapsing much of VirnetX's position and its stock. The lesson isn't who won a given verdict; it's that a patent can be worth half a billion dollars at trial and nothing at the patent office.
What It Changed
Patent litigation visibly changed a product
Most patent fights are invisible to users. This one wasn't: to avoid the patents, Apple changed how FaceTime connects — pushing calls through relay servers rather than directly between devices. It raised Apple's operating costs and was tied to a period of FaceTime reliability complaints. Few cases show so plainly that a patent can reshape software in your pocket.
Litigation and the patent office reached opposite verdicts
Texas juries said the patents were valid and infringed, to the tune of half a billion dollars. The patent office, applying a lower standard in inter partes review, said key claims should never have issued. The years-long split — echoing i4i — is the clearest illustration of why post-AIA IPR became the defendant's weapon of choice: it can undo in review what a jury locks in at trial.
Fuel for the venue and NPE-damages debate
A non-practicing entity winning repeated nine-figure verdicts in one favorite district sharpened the national fight over forum shopping and NPE damages — pressures that fed the Supreme Court's TC Heartland venue ruling and the broader push to make issued patents easier to challenge.
From PatentBrief
Why is a patent so hard to kill in court? →
VirnetX is the IPR-versus-litigation story in full. See the case that set the high bar for invalidating a patent in court — and why the patent office became the workaround.