Patent holding company Lodsys said that “greater than 150 companies” have licensed its in-app purchase technology, with “more than 4 out of 5” of these doing so outside of the litigation process.

The company also updated on the progress of a lawsuit against a number of developers in which Apple has been able to intervene, stating that this remains “unresolved and clearly contested”, despite the iOS company’s “unilateral declarations to the contrary”.

Apple has asserted that by licensing Lodsys’ technology itself, it is able to extend this to third-party developers – which Lodsys has disputed. This issue has been consolidated into a single lawsuit with others that are also the subject of litigation, and a trial is scheduled for 2013.

Lodsys also said that as part of a patent re-examination requested by Google, the US Patent and Trademark Office confirmed one patent, which is “particularly relevant regarding in-app purchases and free-to-paid application upgrades”, with Lodsys stating that it has “every confidence that all claims will ultimately be confirmed through this lengthy process”.

The patent company said that the developers which have licensed its technology have “realised significant savings by taking advantage of lower licensing rates”.

It has appointed IPMG to conduct a “non-litigation licensing program”.

Lodsys began targeting iOS developers in 2011, before extending its actions to include Android and BlackBerry developers as well.

Among its targets have been well-known developers including Rovio and EA.