IronSource’s Challenge to Mobile App-Installation Patent Tossed

April 7, 2026, 5:48 PM UTC

Mobile gaming company IronSource Ltd. can’t appeal an administrative tribunal’s ruling that let competitor Digital Turbine Inc. modify parts of a patent describing a process for installing mobile apps, the Federal Circuit said.

IronSource didn’t show it or its customers were at sufficient risk of being sued for infringing the modified patent to establish standing in the case, the appeals court said.

IronSource in 2021 challenged Digital Turbine’s US Patent No. 11,157,256 at the Patent Trial and Appeal Board as being anticipated, obvious or both, and the tribunal in March 2024 agreed. But at the same time the US Patent ...

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