If you were wondering whether the long-running battle between Apple and Qualcomm was going to continue to grow in intensity or be quietly settled, it looks like we now have an answer.

Qualcomm has dramatically upped the ante in its latest court filing, now accusing Apple of stealing its source code and giving it – and other trade secrets – to rival chipmaker Intel …

CNBC reports the news with a pun even I would hesitate to use.

Qualcomm has previously accused Apple of breaching an agreement to allow the chipmaker to audit Apple’s use of its source code and other trade secrets. But the company now goes much further, suggesting that Apple was only able to switch from Qualcomm to Intel radio chips by using Qualcomm code to improve the performance of Intel’s ‘lower quality’ chips.

The allegations are contained in a complaint that Qualcomm hopes the court will amend to its existing lawsuit against Apple for breaching the so called master software agreement that Apple signed when it became a customer of Qualcomm’s earlier this decade.

The chipmaker said it gave Apple access to confidential material on the strict understanding that it could be used only in respect of Qualcomm chips.

Qualcomm sees this as a new and far more serious claim against Apple.

It’s believed that this year’s iPhones exclusively use Intel radio chips, with only older models still using Qualcomm ones. There have been reports of poor Wi-Fi and LTE performance from some iPhone XS models, despite offering faster uploads and downloads, reportedly due to ‘antenna gain issues.’

“Unlawful use of Qualcomm’s valuable trade secrets to try to help a competitor catch up irreparably harms us and must not be allowed to continue,” he said.

Qualcomm may need the extra charges against Apple following an apparent ‘tactical error‘ in its approach to the trial.