08531833 is referenced by 50 patents and cites 58 patents.

A case for an electronic device protects and extends the battery life of the electronic device. The case has a lower case portion and an upper case portion, which assemble together to protect the top, side, and bottom edges of the electronic device. The lower case portion includes a battery to extend the battery life of the electronic device.

Title
Portable electronic device case with battery
Application Number
13/26022
Publication Number
8531833 (B2)
Application Date
February 11, 2011
Publication Date
September 10, 2013
Inventor
David Johnson
San Francisco
CA, US
Markus Diebel
San Francisco
CA, US
Agent
Aka Chan
Assignee
Incase Designs
CA, US
IPC
G06F 1/16
H05K 7/00
H05K 5/00
View Original Source