But once they expire, other companies can make cheap knockoffs, driving down the price.
For example, Congress allowed the Law of Heritage Protection to expire at the end of 2011.
The most significant change is that new ITINs will now expire after five years .
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The investment period for Msref' most-recent fund set to expire at the end of June.
That means a time limit after which the powers expire or have to be reviewed...
Some in Washington argue that letting tax relief expire is not a tax increase.
Permanently restricted funds are those that are donated for a designated purpose that will never expire.
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The Bush tax cuts were renewed in 2010 and are now scheduled to expire in 2012.
Second, the Bush tax cuts will expire for everyone at the end of that year.
Set up a meeting with your bankers 60 days before your revolver is set to expire.
Few people want to see the tax cuts expire as scheduled for all taxpayers in 2013.
Because Arafat has taken the view that the Oslo accords expire on that day.
The Bush tax cuts were temporary and should fully expire unless we have a surplus.
The current deals with the league's cable and broadcast partners expire after the 2013 season.
The almost-ritual negotiations formally start 60 days before the old contract is due to expire.
Congress allowed the reduced rate to expire as scheduled at the beginning of this year.
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By turn, Amgen expects to face such competition for its own drugs when their patents expire.
The top marginal rate goes up to 39.6% when the Bush tax cuts expire.
Is it mainly dictated by the clock and these things -- the tax cuts that expire?
Myanmar's ruling junta, however, says Suu Kyi's house arrest does not expire for six more months.
Failed policies that have not delivered a positive return on investment for taxpayers should expire.
Thus, I have argued that the VEETC should expire as scheduled at the end of 2010.
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Does Perry assume the Bush tax cuts are extended indefinitely or do they expire?
See, at the end of the year, middle-class tax cuts are set to expire.
Futures and other derivatives contracts are proxies, and they are temporary contracts that expire.
The theoretically temporary tax cut is due to expire again in a couple of weeks.
Democratic leaders have said they won't let the middle-class tax breaks expire, a pledge Mrs.
After a stroke, far too much glutamate is released, overworking nearby brain cells until they expire.
The Bush tax cuts on income and capital gains are set to expire next year.
The ban on assault weapons and high-capacity magazines never would have been allowed to expire.
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