Today, the design of digitial systems involves the use of extensive software. Most of this software is expensive. There is always a temptation to "borrow" some CAD tool to get the job done or to modify existing software. One such temptation is to fix the DEMO version of StateCAD so as to overcome the five state limit.
 

In addition to being unethical, you will be in violation of the law. The following extract from the State of California Penal Code should be of interest

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(a) It is the intent of the Legislature in enacting this section to expand the degree of protection afforded to individuals, businesses, and governmental agencies from tampering, interference, damage, and unauthorized access to lawfully created computer data and computer systems. The Legislature finds and declares that the proliferation of computer technology has resulted in a concomitant proliferation of computer crime and other forms of unauthorized access to computers, computer systems, and computer data.

The Legislature further finds and declares that protection of the integrity of all types and forms of lawfully created computers, computer systems, and computer data is vital to the protection of the privacy of individuals as well as to the well-being of financial institutions, business concerns, governmental agencies, and others within this state that lawfully utilize those computers, computer systems, and data.

(b) (This section contains definitions of terms, not necessary to copy)

(c) Except as provided in subdivision (h), any person who commits any of the following acts is guilty of a public offense:

(1) . . .
(2) . . .
(3) . . .
(4) Knowingly accesses and without permission adds, alters, damages, deletes, or destroys any data, computer software, or computer programs which reside or exist internal or external to a computer, computer system, or computer network.
(5) etc.

(d)

(1) Any person who violates any of the provisions of paragraph (1), (2), (4), or (5) of subdivision (c) is punishable by a fine not exceeding ten thousand dollars ($10,000), or by imprisonment in the state prison for 16 months, or two or three years, or by both that fine and imprisonment, or by a fine not exceeding five thousand dollars ($5,000), or by imprisonment in the county jail not exceeding one year, or by both that fine and imprisonment.

Wrong! Most people do not take the time to read the license that comes with software. If you read it carefully, you will find that (most) licenses state that the software belongs to the company which produced it. What did you buy? You bought the license to use it in your computer. You did not buy the software.