Who owns the licensing for Winnie-the-Pooh?

Could you please clarify who holds the licensing rights for the beloved character Winnie-the-Pooh? Is it the original creator's estate, a specific publishing house, or perhaps a larger media conglomerate that now oversees the distribution and use of the character's image and likeness? Understanding the ownership structure behind such a beloved character is crucial for anyone looking to use or reference Winnie-the-Pooh in any form of media or commercial endeavor.