If you would like to apply to take the patent bar examination, you must demonstrate to the satisfaction of the United States Patent and Trademark Office that you possess the scientific and technical training necessary to provide valuable service to patent applicants.
Menstruation, or period, is normal vaginal bleeding that occurs as part of a woman's monthly cycle. Every month, your body prepares for pregnancy. If no pregnancy occurs, the uterus, or womb, sheds its lining. The menstrual blood is partly blood and partly tissue from inside the uterus.
See a picture of a woman's reproductive system. The menstrual cycle is measured from the first day of menstrual bleeding, Day 1, up to Day 1 of your next menstrual bleeding. Although 28 days is the average cycle length, it is normal to have a cycle that is shorter or longer.1  A teen's cycles may be long (up to 45 days), growing shorter over several years.enstrual period. On Day 1 of your cycle, the thickened lining (endometrium) of the uterus begins to shed. You know this as menstrual bleeding from the vagina. A normal menstrual period can last 4 to 6 days. Most of your menstrual blood loss happens during the first 3 days.