1 About Network Coding Related Patents Vincent Roca (Inria, France) IETF92, NWCRG meeting March 27 th 2015, Dallas.

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Presentation transcript:

1 About Network Coding Related Patents Vincent Roca (Inria, France) IETF92, NWCRG meeting March 27 th 2015, Dallas

Why this presentation? WGs are authorized to discuss IPR considerations msee RFC 3979 and RFC 4879RFC 3979RFC 4879 mif you feel uncomfortable, please leave the room during 15’ our goal is not to answer questions like: Does techno X infringe patent Y? Is patent Z valid in front of prior art? but rather: What is the situation today? 2

Warnings… this work is limited in scope, breadth, and accuracy mit does NOT claim to be exhaustive mthe methodology is somewhat BIASED, but not totally (see next slides) some contributors prefer to remain anonymous… mI’m just a “messenger” mI didn’t read thoroughly nor analyzed the listed patents 3

Raw statistics many patents are targeting NC main contributor is clearly identified mMIT + CodeOn totalize 22 patents (44.9% of total #) is this result biased? myes, since only NWCRG contributors filled in an IPR disclosures mbut not totally as we also searched “network coding” keywords in Google Patent 4 categories# patents declared in IETF IPR disclosures 15 (30.6% of total) NC related, but not disclosed at IETF 34 warning: does not imply they apply to NWCRG activities total 49

Number of patents per year distribution mtotal of 9 patents in 2012: it’s the maximum so far! mactual number for 2014 not known because of “unpublished pending patents” mwe cannot find them yet… 5 all actorsMIT + CodeOn only

Regions applied for US only: 28 mQ: is it because USPTO is the less demanding office ;-) CN only: 3 WO extension: 18 mNB: a WO extension does not mean it is granted worldwide. It just means it will be at a minimum considered worldwide as prior art ⇒ IPR issues will be essentially localized in the US mfortunately there’s life and use-cases outside of US 6

What is patented? An extreme example msay you’re implementing a NC stack, in user space. You need to capture datagrams being sent to process them in you’re software. Are you using TUN for that? 7 from the WO A2 patent application

The full list is here: _few_nc_related_patents_ pdf?dl=0 8