U.S. Patent 10691665 was awarded on 2020-06-23 and describes a “Constructing blockchain world state Merkle Patricia Trie subtree.” This blockchain patent has been cited 2 times by other U.S. patents according to our law firm research, and can be considered an innovative patent in the field of cryptocurrency and blockchain. The abstract states:

Implementations of this specification include traversing a world-state MPT in multiple iterations, and, at each iteration, for a current node of the world-state MPT, executing one of: marking the current node as an account node and storing an address of the current node in the address list, determining that the current node is an extension node, and moving to a next iteration of the traversal setting the current node to a node referenced by the extension node, and marking the current node as a transition node, and storing an address of the current node in the address list; creating a sub-tree of the world-state MPT based on the address list, a root node of the sub-tree including a root node of the world-state MPT, and one or more child nodes of the sub-tree corresponding to nodes of the world-state MPT having an address stored in the address list. Link to Full Patent

This patent was originally filed on 2019-09-30 which gives it an average processing time in the field. Alibaba Group Holding Limited has 1834 total patents. The first named inventor is Wenbin Zhang of Hangzhou, . The primary examiner was Van H Oberly.

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