Some, such as Synercid, which Aventis sold to King Pharmaceuticals today, are especially difficult to administer.
In 1999 Chiron signed an agreement with Aventis to jointly develop and fund the technique.
Chiron regained U.S. rights, and Aventis had to step a few years back in the race.
In 1999, when Hoechst merged with Rhone-Poulenc to form Aventis, it decided to sell Messer Griesheim's welding business.
Aventis had the rights to sell it in the U.S. and Chiron in the rest of the world.
It still appears that Bayer may buy Aventis CropScience, the agricultural division of Franco-German drug giant Aventis .
The current suit was originally brought by Aventis CropScience NV, which alleged Dow infringed four patents.
Aventis had to run a gigantic, 24, 000-patient safety trial to prove the medicine is safe.
And consider that the merger between Sanofi-Synthelabo and Aventis is not yet three years old.
The most popular combo is metfornim and sulfonylureas (the generic version of Aventis ' Amaryl ).
One big question: If Novartis buys Aventis, would that motivate Pfizer to do another big deal?
Strasbourg, France-based Aventis could wind up being what Vasella has been waiting for: an eager seller.
Pfizer recently bought out the Exubera stake of co-developer Sanofi-Aventis, creating a higher-margin opportunity.
It was formed in 2004 in a merger between two French companies, Sanofi-Synthelabo and Aventis.
French drugmaker Sanofi-Aventis SA on Friday shortened its name to Sanofi, the Associated Press reports.
However, after the Novartis statement was released, Aventis said it planned to talk with Novartis further.
It expects to compete with Sanofi-Aventis, GlaxoSmithKline and Novartis, which plans to buy Chiron.
Only Sanofi-Aventis actually makes the vaccine within U.S. borders (its plant is in Swiftwater, Pa.).
"It will definitely guide how we treat patients, " says Sanofi-Aventis cancer research head Christoph Lengauer.
The purchase of Aventis CropScience makes Bayer's agriculture division one of the biggest in the world.
Last week, Sanofi-Aventis canceled development of a diabetes drug partly because of rising regulatory hurdles.
Bayer has already been approached by potential bidders, rumored to include Aventis, Roche, GlaxoSmithKline and Novartis.
An index of stories about genetically engineered plants and animals, including Aventis' StarLink corn.
For example, Sanofi-Aventis gets close to a third of its sales from emerging markets.
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Now the second NGF-1 antibody, from Regeneron and Sanofi-Aventis, has been put on ice, too.
Now Aventis has asked that the trial be increased in size again--to 750 patients.
Both Merck and Aventis have picked similar bits of DNA to do the job.
In the current versions of their vaccines, Aventis and Merck target slightly different gene fragments.
Warrell's version of what's going on: Aventis decided that Genta had not been conservative enough.
Since Aventis is picking up most of the tab, Genta is in no position to argue.
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