5. INTANGIBLE ASSETS (Tables)

12 Months Ended

Apr. 30, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

The following table summarizes our intangible assets as of April 30, 2014:

Asset Category	Value Assigned		Weighted Average Amortization Period (in Years)	Impairments		Accumulated Amortization			Carrying Value (Net of Impairments and Accumulated Amortization)
IPR&D	$	22,000,000	N/A	$	-	$	-		$	22,000,000
Patents		724,067	10.8		-		(289,943	)		434,124
License Rights		607,947	14.6		-		(148,713	)		459,234
Trademarks		106,386	N/A		-		-			106,386
Total	$	23,438,400		$	-	$	(438,656	)	$	22,999,744

The following table summarizes our intangible assets as of April 30, 2013:

Asset Category	Value Assigned		Weighted Average Amortization Period (in Years)	Impairments			Accumulated Amortization			Carrying Value (Net of Impairments and Accumulated Amortization)
Patents	$	645,918	11.2	$	(27,279	)	$	(258,499	)	$	360,140
License Rights		572,370	15.6		-			(117,969	)		454,401
Trademarks		110,157	N/A		-			-			110,157
Total	$	1,328,445		$	(27,279	)	$	(376,468	)	$	924,698

Expected amortization expense

Year ending April 30,	Amount
2015	$	66,525
2016		65,949
2017		62,032
2018		61,239
2019		61,111
Therafter		576,502
	$	893,358