The new formulation is being developed by Alexza Pharmaceuticals.

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MicroChips' scientists developed a freeze-dried formulation of the hormone that is packaged in the device and released on command, eliminating the need for injections.

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Andrx may have the best shot at winning the court battle because it claims to have developed a patented two-layer formulation that completely avoids Astra's middle layer.

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Among Schering's pipeline drugs are a new formulation of Taxol, for breast cancer, and a drug co-developed with Novartis that was hoped to be a pill version of Genentech 's (nyse: DNA - news - people ) Avastin.

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