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- Health ministry sets timeframe for keeping animals treated with antibiotics out of food chain
- Gujarat pollution board gets a makeover in efficiency 33
- 28 years of Earth’s surface changes on Google
- India bans use of dolphins for commercial entertainment
- Chaos in the iron age 4
- Poison in disguise 2
- Pawar's daughter on panel that will examine biotechnology Bill 1
- Activist lands in jail for protesting lack of health facilities in tribal district five years ago
- So much to give
- Mirage of a river 2
- Environment ministry wants to restore night traffic through Bandipur tiger reserve 52
- A green facade 44
- Diesel: when bad policy makes for toxic hell 38
- Gujarat pollution board gets a makeover in efficiency 33
- What’s good insulation? 30
- How vulnerable are India's nuclear power plants to disaster 28
- Grand distraction called river interlinking 28
- Eat at your own risk 27
- Green energy takes toll on green cover 26
- Temporary solution, permanent jam 25
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Issue Date: Jul 31, 2002
The US Supreme Court's recent decision to disallow close imitations of patented inventions has given back the holders of valuable patents their lost smile. Earlier, in 2000, a federal court had limited the 'doctrine of equivalents', which entailed that a patent on blue nails could be extended to cover red nails as well, as they have similar functions.
The lower court had said that if a patent's claim had been narrowed during review, it could not be widened again later by claiming equivalence. In the case, Festo Corporation, a machine-toolmaker, argued that its patent on a part for robotic arm should cover a similar device made by a Japanese rival. Patent holders feared that this would encourage more copycats. They requested the US apex court to reverse the lower court's verdict, which it eventually did.
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