The UPC Preparatory Team is now getting serious by sharing an implementation roadmap. This roadmap depicts all the key activities and milestones of the UPC in the coming months, including the start of the Sunrise Period as of January 1st and the actual start of the UPC Agreement as of April 1st 2023. Here is the link to the roadmap:

https://www.unified-patent-court.org/news/latest-state-play-view-launch-unified-patent-court

Please reach out if you have any questions regarding this significant change to the European Patent Law.