But many services and intangible assets, say a unique patent or a global brand, do not have a market price, so it is hard to estimate what they are worth.

但多数服务及无形资产，比如一个独特的专利或一个全球品牌，并没有市场价格，所以很难估量他们的价值。

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Two years later he got a patent, and the McIlhenny family has been running the Tabasco brand ever since.

两年之后他为他的发明申请了专利，之后Mcllhenny家族就一直经营着塔巴斯科这个品牌。

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When he was seventy-five, he felt powerless to maintain his company, so he transferred his brand and patent to others.

75岁时，他感到力不从心，因此转让了自己创立的品牌和专利。

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The trial goes to the heart of the escalating controversy over how much patent protection pricey brand-name drugs should get.

FORBES: Hard to Swallow

Whereas China used to be the manufacturer, China is now also the brand and patent holder.

FORBES: The Globalization Of China's Corporate Brands

They spend brief periods of time innovating, and then milk a technology, brand, patent, or some combination therein for as long as they can get away with it (or in Moto's case, way longer).

ENGADGET: Motorola's cellphone business needs a new leader: okay, I'm in.