Proprietary (adjective)

1. Owned by a particular person or company.
2. Protected by trademark, copyright, or patent.
3. Used or produced by a particular company and available from them and no one else.

Origin:

From latin proprius ("one"s own") + -ary.

Examples:

1. The company has developed a proprietary software that is not available to the public.
2. The company's proprietary technology gives it an edge in the market.
3. The company's proprietary rights prevent competitors from using the same technology.
4. Proprietary information must be kept confidential.
5. The company's proprietary brand is well-known in the industry.