What is the situation these days with infringement of major IP by Chinese companies? If they've had a battery chemistry to themselves for a while it sounds like

What is the situation these days with infringement of major IP by Chinese companies? If they've had a battery chemistry to themselves for a while it sounds like they're having their cake and eating. I have first hand knowledge where at the small and medium scale, Chinese manufacturers will happily knock off major brands and steal technology to make products, and as a non-Chinese IP owner you have very little recourse. Is this situation still how it works for key IP from major companies or if you're (e.g.) Tesla and you had a patent on battery technology, could you realistically enforce it in China? There are some old quotes from Elon Musk about Space X just keeping stuff secret rather than patenting it because otherwise he'd be just giving it away to his major competitor in China: https://www.businessinsider.com/elon-musk-patents-2012-11?r=US&IR=T https://www.businessinsider.com/elon-musk-patents-2012-11?r=...