**Author's contribution**

Bratislav Stankovic contributed to this article in his personal capacity. The views and comments expressed herein are solely the opinion of the author, do not reflect the performance of duties in the author's official capacity, and are not endorsed by, nor should be construed as, any viewpoint official or unofficial of the United States Patent and Trademark Office. The author confirms to the best of his knowledge that no information contained herein is privileged, confidential, or classified.
