95 years from creation.
It varies from country to country. In the US, corporate works are protected for 95 years from publication or 120 years from creation, whichever is shorter.
A corporate entity would not have a copyright date.
Computer code is protected as a "literary work," and (as a corporate work) would be protected for 95 years from release. Code is often patented as well; patent protection would last 20 years.
Under USA laws: 95 years for a corporate owner or an employer. Life+70 Years if the magazine is owned by an individual who did the work not as a work for hire. Note that copyright of images or articles within the magazine could have much longer individual copyrights of their own, such as those done by individuals where they live another 50 years and copyright last another 70 years after that.
Copyright term for software in India is 60 years from the date of publication.
once you attack or fight someone.
Sandy Norman has written: 'Copyright in Voluntary Sector Libraries (The Library Association Copyright Guides)' 'Copyright in industrial and commercial libraries' -- subject(s): Copyright, Corporate libraries, Fair use (Copyright) 'Copyright in Industrial and Commercial Libraries (The Library Association Copyright Guides)'
Generally, at least under US Law, copyright protection extends 70 years past the death ot the author/creator of the work.
In Australia, protection exists for the life of the creator plus 70 years.
It varies from country to country. The minimum for members of the World Trade Organization is the life of the creator plus 50 years; the US and several other countries have extended this to life plus 70 years.
Start by trying to determine the date, who was the photographer (or photographer's employer), and whether the photograph was ever published. Then see the related question, "How long does a copyright last?"
Copyright can be bought, sold, or transferred at any time during its duration.