Is an implementation of Redfish *infringing* on these and other undisclosed patents?
Is an implementation of Redfish entitled to *package* (e.g. included in the software / installable image etc.) and *distribute* the Redfish schema files ?
The Redfish README is referring to a DMTF-wide disclosure list - the patents shown there may apply to any standard the DMTF has produced, but that list is not specific to Redfish. We're not lawyers here, though, so recommend you refer any legal questions to your legal staff...
But that topic, and the answer about distribution of the schema files are both covered by the DMTF's Copyright policy, here:
For re-distribution, see the relevant statement from that page: "Members and non-members may reproduce DMTF specifications and documents for uses consistent with this purpose, provided that correct attribution is given. "
You should read the DMTF patent policy and discuss it with your lawyers. I'm willing to bet that the list published by the DMTF does not contain all of the patents that an implementation may need to secure rights to use. Not all patent owners are DMTF members. Furthermore, the DMTF patent disclosure rules does not ensure that all member company patents are put on this page.