RE: Weekend reflections on a great week24 Sep 2023 09:05
The astute pharma companies would have started a research programme using pre|CISION a year or so ago when it had become clear that It Works™. They can do this even though the tech has IP protection. What they can't do is commercialise it. Well, not without a massive court case, which they would lose.
So they will have already identified their past powerful cytotoxic agents with a free amino group (-NH2) that can be bonded to the acid (-CO2H) at the Proline end of 5140, consulted the archived lab books for activity data, pulled suitable compounds from storage, purified them, linked them to 5140 and started in vitro and animal model studies.
In short, by now they will have a good idea about how pre|CISION - the AVA6000 version with 5140, at least - works for them with their own research compounds and be in a position to negotiate licensing the tech with confidence. But they will also have been going through Avacta's IP with a fine toothcomb (and endless cups of strong coffee) to see whether there is any way they can circumvent the coverage. That won't be easy as the essence of the invention is just R-D-Ala-L-Pro-cytotoxin. FAP is a Gly-Pro-cleaving endopeptidase, so the invention is really the D-Alanine replacing the Glycine.
Avacta's core IP: https://patents.google.com/patent/US9737556B2/en ☕☕☕
Their own research compounds may have failed in clinical trials (so had specific patent coverage), not made it to trials because too toxic or there were better candidates (so had broad patent coverage for the compound family) or was in a compound family that was too toxic to do anything with (so may not have been patented - not a problem as anything that hasn't been publicly disclosed can be patented).