Patent rights assignment

Company S used to have a wholly owned subsidiary in the UK (“S-UK.”) S eventually shut down S-UK. S-UK held a number of patent assets.

S dissolved the S-UK legal entity circa 2010. The liquidator hired for this process did not have S-UK sign any forms expressly assigning the S-UK held patent assets to S. The liquidator claims that they were not aware of any S-UK intangible assets, including any patents. We have not found any “catch-all” assignments where S-UK assigned all of its assets, or all remaining assets, to S. We did find a board resolution authorizing the liquidator to distribute all of the assets of S-UK to its owners (of which there was just S at that time.)

We would like to register S as the owner of these patent assets. They are mostly in the U.S., EP (France, Germany, UK, mostly via the EPC). There are also some in JP, AU, CA, MX, TW.

Is there an easy way to do so under this scenario?