Ekso Bionics Holdings Inc (EKSO)

[Rhetorical]

Here's why the opposite might be true: Ekso Bionics having more overlap with Wyss than ReWalk. I'm certainly not a patent lawyer, but I do read a lot of the exoskeleton patents and watch a lot of what DARPA publishes.

Watch this video. The main speaker is the project manager of DARPA's Warrior Web program:

It appears to me he is wearing cables and pulleys while demonstrating with the soft exoskeleton he says is made by the Wyss Institute (notice what looks like cable contractions at his stomach while he is walking around down the aisle). It's unclear how old the technology is that he is demonstrating. (I believe he meant to say the force being placed at the foot is the worst place to put it, not the mass. My believing this is based on the fact he's showing a force diagram not a mass diagram)

That being said, now look at Ekso Bionic's & ReWalk Robotic's patents:

http://stks.freshpatents.com/Ekso-Bionics-Inc-nm1.php
http://stks.freshpatents.com/Rewalk-Robotics-Ltd-nm1.php

I can't find anything about cables and pulleys in ReWalk's patents.
I can however, find this for Ekso Bionics:

http://www.freshpatents.com/-dt20170727ptan20170209330.php
http://www.freshpatents.com/-dt20171109ptan20170319421.php

both of these patent applications speak about pulleys.

Also, note that Ekso Bionics has stated this:

"This is the fourth time DARPA has tapped the company’s Ekso Labs™ division for its unparalleled exoskeleton knowledge to develop a more advanced generation of exoskeletons."

https://ir.eksobionics.com/press-releases/detail/566/ekso-bionics-selected-for-development-of-next-generation