Tocilizumab patent chugai expiration?

Do you want patent expiration info for Tocilizumab (Actemra) owned by Chugai/Roche in a specific market? Jurisdiction matters a lot (US, EU, Japan, etc.), and there are multiple patent families (composition of matter, formulations, methods of use, manufacturing methods) plus possible SPCs or regulatory exclusivities that can affect effective entry of biosimilars.

If you can share:
- Which markets/countries you care about (e.g., US, EU, Japan, UK, others)
- Whether you want just the composition-of-matter patents or all related patents and exclusivities

I can pull together current expiry dates (with notes on term extensions, SPCs, and regulatory data exclusivity) and present a clear, jurisdiction-by-jurisdiction summary.