Lenovo has won an appeal in a UK court that will allow it to secure a temporary licence for Ericsson's patents, marking a significant development in the ongoing patent dispute between the two companies.

The case, which revolves around fair, reasonable, and non-discriminatory (FRAND) licensing terms for 4G and 5G wireless technology, has seen both companies take legal action in various countries, including the UK, Brazil, and the US.

In his ruling, Judge Richard Arnold determined that Ericsson had failed to act in good faith by pursuing legal claims in foreign courts despite Lenovo's willingness to accept the FRAND terms set by the English courts.

He stated that, as a willing licensor, Ericsson should have agreed to an interim licence, with Lenovo being required to pay a substantial sum to Ericsson. Lenovo's Chief Legal Officer hailed the decision as a victory for transparency and fairness in global patent licensing.

The ruling follows Lenovo's 2023 lawsuit against Ericsson in the UK, a part of the broader dispute between the two over the terms for the use of each other's patents. Ericsson has yet to comment on the decision.