4
votes
Accepted
How can we identify the change in Assignments. Is it based on time frame (USPTO update once in a 6 months) or if there is some legal status changes
The answer is that public recordation of a patent assignment is not required for the assignment to be a valid transfer of ownership. See, e.g., this discussion in the Manual for Patent Examination ...
Only top scored, non community-wiki answers of a minimum length are eligible
Related Tags
assignment-history × 8ownership × 1
search × 1
expired-patent × 1
assignment × 1
research × 1
united-states × 1
history × 1
assignee × 1
lapsed-patent × 1
market × 1
us8292744 × 1
us4915276 × 1
us2038852 × 1
us6535909 × 1
activity × 1
virtual-reality × 1
us680106 × 1