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lawrie / fpga_pio

An attempt to recreate the RP2040 PIO in an FPGA
BSD 2-Clause "Simplified" License
292 stars 30 forks source link

Patent violation #9

Open gamelaster opened 1 year ago

gamelaster commented 1 year ago

I just want to give heads up about the fact that even PIO is not that unique (other MCUs have similar cores as PIO) Raspberry Pi decided to really patent PIO: ☹️ https://patents.google.com/patent/WO2022153025A1/en

lawrie commented 1 year ago

I notice that one of the patent holders, Luke Wren (https://github.com/Wren6991), is watching this repository._

ke5fx commented 1 year ago

Sheesh, what a ridiculous patent. Hard to see how something like Cypress's GPIF engine doesn't pre-empt at least some of the claims.

greenscreenflicker commented 1 year ago

Let me point out, that the parent is an application only (as seen by the A in the application). Based on my own patents, i can state, if you don't get B right away (application granted), it's a hard time to get to B.

gamelaster commented 1 year ago

@greenscreenflicker which one A do you exactly mean? On the end of patent number? (I can't really find what you mean)

greenscreenflicker commented 1 year ago

Yes, A1 means application received by the office, B and C means granted.

gamelaster commented 4 months ago

https://patents.google.com/patent/EP4278267A1/en some changes happened in mean time, but even on European Patent level, it is "Pending"