@JustANobody I found this from a quick google search, I hope it helps.
It is not within the last 2 years like you wanted but I tried.
As of the date of this article, there have been 26 cannabis plant patents issued by the U.S. Patent Office. The first patent was granted near the end of 2016. Then, after no issued cannabis patents for a couple of years, 3 were issued in 2019; 9 were issued in 2020; and 13 have been issued so far in 2021.
@JustANobody not sure exactly what you are looking for…
a California federal judge ruled that the legal cannabis patents asserted in the case were enforceable,
Reggie Gaudino, vice president of research and development for Lafayette, Colorado-based Front Range Biosciences, a cannabis biotech company, said once cannabis genetics have been sold in dispensaries and spread across the industry without patents or other protections “it’s not possible to put the toothpaste back in the tube.”
“However, you can squeeze all the toothpaste out and put it into a different container,” he added.
“Then do something useful with the toothpaste in that new container.”
A breeding company that has an interesting strain, for example would be smart to have a lab look at the genetics.
“You have to be willing to accept that it takes outside consultations and technology to be able to do the things Monsanto and Dow do,” he added.
“Once that happens, we start to do things on their scale.”
It no longer takes eight-12 years to stabilize a strain, Gaudino said. It’s more like three-four years. So a breeder can file a patent on every interesting strain out there.
“We litter the ground with enough land mines that (Big Ag) has to tread lightly, and it takes them time to get caught up,” he added.
Otherwise, the Big Ag companies can go to dispensaries and buy all the strains and genetics that are on sale.
“They will take it back to their lab and they will do it faster and better,” Gaudino said. “Because that’s what they do.”