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Published online 5 April 2011 | Nature | doi:10.1038/472020a

http://www.nature.com/news/2011/110405/full/472020a.html

Patent dispute threatens US Alzheimer's research

Lawsuit could expose hundreds of scientists to property-rights litigation.

Erika Check Hayden

The website of the Alzheimer's Institute of America (AIA) doesn't reveal much 
about the organization, but portrays it as committed to supporting research and 
patients. Among people who study Alzheimer's disease, however, the AIA, based 
in St Louis, Missouri, is best known for filing lawsuits against companies and 
researchers — a practice that scientists say could hamper the progress of 
research into combating the dreaded disease.

An AIA lawsuit filed in February 2010 against the Jackson Laboratory in Bar 
Harbor, Maine — a source of laboratory mice funded by the US National 
Institutes of Health (NIH) — now threatens hundreds of government-sponsored 
Alzheimer's researchers with litigation. The lab is so concerned about the 
financial and scientific costs of defending itself that it has asked the NIH to 
assume the defence of the case.

"The lawsuits raised by the AIA are unfortunate, and constitute a large drain 
on valuable scientific resources at a time when scientific funds are 
increasingly tight," says Benjamin Wolozin, an Alzheimer's researcher at Boston 
University in Massachusetts.

The suit concerns an AIA patent on a human DNA sequence used in mouse models of 
Alzheimer's disease. The sequence encodes the 'Swedish mutation' (discovered in 
a Swedish family), which causes early-onset Alzheimer's. Michael Mullan, a 
biomedical researcher who is now head of the Roskamp Institute in Sarasota, 
Florida, patented the sequence in 1995, then sold it to the AIA.

The NIH requires scientists to share transgenic mouse strains developed using 
NIH money, and the agency funds Jackson to breed, house and distribute these 
mouse models, says David Einhorn, house counsel at the lab. The AIA is alleging 
that Jackson infringed on its Swedish mutation patent, and others, when the lab 
distributed 22 strains of mice with the mutation to researchers; the 
organization is seeking unspecified damages.

The lawsuit also accuses six commercial companies of improperly profiting from 
the Swedish mutation, for instance by using mice bearing the mutation to test 
potential drugs. Furthermore, the AIA has filed four separate suits relating to 
the patent against academic institutions and companies in Oklahoma, Florida, 
Missouri and Pennsylvania (see 'Patent disputes').

But the litigation against Jackson could have the broadest impact on research. 
According to Einhorn, the AIA is demanding that Jackson hands over the names of 
all scientists who have worked with the relevant mouse models; this raises the 
possibility that those individual researchers might also be sued.

Last month, judge Elizabeth Laporte for the US District Court of Northern 
California recognized the potential impact of the suit on Alzheimer's research. 
She denied an AIA request to expand the suit by adding another 
patent-infringement claim, writing in her decision that the AIA has not 
disputed Jackson's claim that "prolonging the litigation in this case would 
harm Jackson and the public by extending the chilling effect of the litigation 
on mice research on Alzheimer's disease".

The AIA says that it allows academic research on mouse models covered by its 
patents, but does not permit work that profits from them. "Jackson Laboratory 
is not giving away the mice for academic research. On the contrary, these mice 
are being sold, and Jackson Laboratory is making quite a lot of money in the 
process. Furthermore, the mice Jackson sells are, in many instances, being used 
for commercial, not academic, purposes," the institute wrote in a statement.

Einhorn counters that the lab doesn't make enough from distributing mouse 
models to cover its operating costs, and it relies on philanthropy and public 
and private grants to support its work. He says that Jackson only allows 
academics, not companies, to use the models, and points out that asserting 
rights in such cases runs counter to common practice,  which is established by 
NIH policy.

Defending against the lawsuit puts Jackson in a difficult spot. Proving that 
the AIA's allegations are groundless could take years and millions of dollars. 
It could also cast a pall over the Alzheimer's-research field, which has 
already been scarred by an extensive fight over the Swedish mutation patents 
during the 1990s (see Nature 404, 319–320; 2000). But settling out of court 
would require Jackson to hand over researchers' names, a demand that Einhorn 
calls "repugnant".

"We haven't been able to settle this case because we're trying to do the right 
thing by trying to support the NIH policy and protect researchers out there in 
the community," says Einhorn.

Kathy Hudson, NIH deputy director for science, outreach and policy, says that 
the agency is considering the lab's request for help, made last December. 
"We're trying to evaluate the legal risks and the risks to the research 
community," she says. 
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