"expected to expire" is correct and usable in written English.
You can use it when referring to something that you anticipate to come to an end. For example: "The lease agreement is expected to expire at the end of August."
They are now expected to expire on 31 January.
The museum's lease extension is expected to expire at the end of April.
The term of the San Francisco grand jury investigating Bonds is expected to expire in the next few weeks.
The bill was expected to expire with the end of the current Congress, but a version of it could be introduced next year.
A second grand jury has been hearing evidence in the case since last July, and its term is expected to expire next month.
Once expected to expire in 1993, the copyright to "Gone With the Wind" will now run until 2032, 70 years after Ms. Mitchell's death.
The offer, widely expected to fail, expires at midnight.
They worry that they will not be able to sell their properties before their time expires, when they expect to go to Canada.
Sony has talked to Roth about replacing Calley, who is 70 and is expected to retire when his contract expires in November just after the expiration of the noncompete clause in Roth's Disney exit package.
The compromise between President Obama and Congress earlier this month allowed a temporary cut in Social Security taxes to expire, which is also expected to crimp growth in the first quarter.
By 2015, when the licenses of both plants are to expire, that fund is expected to stand at $1.9 billion, which is more than enough to cover the Nuclear Regulatory Commission's projection of $1.18 billion to decommission the plants.
