Exhibit 21.1
LIST OF SUBSIDIARIES

Entity Name
State of Incorporation/formation
Ownership
Sampo IP, LLC
Virginia
100%
Relay IP, INC.
Delaware
100%
Cyberfone Systems LLC
Texas
100%
Cyberfone Acquisition Corp.
Texas
100%
Vantage Point Technology, Inc.
Texas
100%
CRFD Research, Inc.
Delaware
100%
E2E Processing, Inc.
Texas
100%
Loopback Technologies, Inc.
Delaware
100%
Loopback Technologies II, Inc.
California
100%
Signal IP, Inc.
California
100%
Hybrid Sequence IP, Inc.
Delaware
100%
PMC Acquisition LLC
Texas
100%
Soems Acquisition Corp
Delaware
100%
IP Liquidity Ventures Acquisition LLC
Delaware
100%
IP Liquidity Ventures, LLC
Delaware
100%
Sarif Biomedical Acquisition LLC
Delaware
100%
Sarif Biomedical LLC
Delaware
100%
Selene Communication Technologies Acquisition LLC
Delaware
100%
Selene Communication Technologies, LLC
Delaware
100%
DA Acquisition LLC
Texas
100%
Dynamic Advances, LLC
Texas
100%
Clouding Corp.
Delaware
100%
TLI Acquisition Corp.
TLI Communications LLC
Virginia
Virgina
100%
100%
Medtech Group Acquisition Corp.
Texas
100%
OrthoPhoenix, LLC
Delaware
100%
TLIF, LLC
Texas
100%
MedTech GmbH
German
100%
Secure Energy LLC
North Dakota
100%
Bismarck IP Inc.
Delaware
100%
Traverse Technologies Corp.
Texas
100%
Power Management Enterprises
Texas
100%