Quarterly report pursuant to Section 13 or 15(d)

Cover

v3.21.2
Cover - $ / shares
 9 Months Ended
Nov. 04, 2021
Sep. 30, 2021
Cover [Abstract]    
Document Type   10-Q
Amendment Flag   false
Document Quarterly Report   true
Document Transition Report   false
Document Period End Date   Sep. 30, 2021
Document Fiscal Period Focus   Q3
Document Fiscal Year Focus   2021
Current Fiscal Year End Date   --12-31
Entity File Number   1-15288
Entity Registrant Name   NETWORK-1 TECHNOLOGIES, INC.
Entity Central Index Key   0001065078
Entity Tax Identification Number   11-3027591
Entity Incorporation, State or Country Code   DE
Entity Address, Address Line One   445 Park Avenue
Entity Address, Address Line Two   Suite 912
Entity Address, City or Town   New York
Entity Address, State or Province   NY
Entity Address, Postal Zip Code   10022
City Area Code   212
Local Phone Number   829-5770
Title of 12(b) Security   Common Stock, par value $0.01 per share
Trading Symbol   NTIP
Security Exchange Name   NYSEAMER
Entity Current Reporting Status   Yes
Entity Interactive Data Current   Yes
Entity Filer Category   Non-accelerated Filer
Entity Small Business   true
Entity Emerging Growth Company   false
Entity Shell Company   false
Entity Common Stock, Shares Outstanding 24,099,629  
Entity Listing, Par Value Per Share $ 0.01