NOTE 4 — INTANGIBLE ASSETS

For the nine months ended September 30, 2019 and 2018, the Company invested in software development costs in the amounts of $137,373 and $308,933, respectively.

Patents, technology and other intangibles with contractual terms are generally amortized over their estimated useful lives of ten years. When certain events or changes in operating conditions occur, an impairment assessment is performed and lives of intangible assets with determinable lives may be adjusted.

Software development costs are amortized over their estimated useful life of three years.

Intangible assets consisted of the following:


	September 30,		December 31,
	2019		2018
Patents	$	3,697,709	$	3,697,709
Capitalized software development		1,547,632		1,410,259
Domain name		10,000		10,000
Accumulated amortization		(3,543,691)		(3,056,564)
Intangible assets, net	$	1,711,650	$	2,061,404

Amortization expense for patents totaled $93,658 and $280,974 for the three and nine months ended September 30, 2019, respectively; and $93,657 and $274,341 for the three and nine months ended September 30, 2018, respectively. Amortization expense for software development totaled $72,238 and $206,153 for the three and nine months ended September 30, 2019, respectively; and $25,653 and $98,297 for the three and nine months ended September 30, 2018, respectively.

Total amortization expense was $487,127 and $372,638 for the nine months ended September 30, 2019 and 2018, respectively.