IP Library › Granted Patent US 888,537
Granted Patent S1
US 888,537 · App. 29/676,976 · Granted Jun 30, 2020

Door lock

Inventors: Charles Laurans (Brookline, MA); Yong Zhao (Medford, MA); Melina Engel (Belmont, MA); Chaim Futran (Cambridge, MA); Gregory Wolos (Somerville, MA)
Assignee: SimpliSafe, Inc.
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Quick Facts
Patent No.
US 888,537
App. No.
29/676,976
Granted
Jun 30, 2020
Kind
S1
Claims (1)

The ornamental design for a door lock, as shown and described.

Assignments (6)
SECURITY INTEREST Recorded Nov 12, 2025
From: SIMPLISAFE, INC.
To: CAPITAL ONE, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 073579/0854 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (055803/0021) Recorded Nov 7, 2025
From: CAPITAL ONE, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
To: SIMPLISAFE, INC.
Reel/Frame 073566/0716 →
RELEASE OF SECURITY INTEREST IN PATENTS Recorded May 6, 2022
From: WILMINGTON TRUST, N.A.
To: SIMPLISAFE, INC.
Reel/Frame 059907/0627 →
SECURITY INTEREST Recorded Apr 1, 2021
From: SIMPLISAFE, INC.
To: CAPITAL ONE, NATIONAL ASSOCIATION
Reel/Frame 055803/0221 →
SECURITY INTEREST Recorded Feb 12, 2021
From: SIMPLISAFE, INC.
To: WILMINGTON TRUST, N.A., AS COLLATERAL AGENT
Reel/Frame 055249/0239 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 8, 2019
From: LAURANS, CHARLES; ZHAO, YONG; ENGEL, MELINA; FUTRAN, CHAIM C.; WOLOS, GREGORY
To: SIMPLISAFE, INC.
Reel/Frame 050650/0928 →