Warrants and Warrant Derivative Liability (Tables)

12 Months Ended

Dec. 31, 2012

Warrants to Purchase Common Shares Outstanding

The Company had 9,936,826 warrants to purchase common shares outstanding at December 31, 2012 at a weighted-average exercise price of $1.44, as summarized in the following table:

Issue Date

Amount

Exercise Price

Expiration Date

4/27/07

17,500

17.90

1/17/14

7/31/09

1,804,888

1.00

7/30/14

10/16/09

7,487,388

1.50

10/15/14

10/16/09

627,050

1.50

10/15/14

9,936,826

1.44

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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