Intellectual Property Deed of Assignment: third party contractor

Deed of Assignment of Intellectual Property Rights by a third party contractor to a company, to be entered into at closing of an investment transaction where due diligence has revealed that the IP developed by contractor has not been formally assigned to the company.

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When do I use this document?

  • for the assignment of IPR by a third party contractor to a company
  • as part of the closing documents in an investment transaction

What are the key features?

  • 8 clauses over 4 pages
  • in the form of a deed between the company and the assigning contractor
  • definitions of Developed IPR and Intellectual Property
  • assignment and further assurance provisions
  • warranties from the assigning contractor as to ownership of the Assigned IPR

What other documents are available?

For a Deed of Assignment of general intellectual property rights by a founder to a company, see

For a Deed of Assignment of registered and unregistered trade marks, see

When do I use this document?

  • for the grant of both a put option and call option over shares in a private limited company
  • so that both the buyer has an option to purchase the shares and the seller has an option to sell the shares

What are the key features?

  • 24 clauses over 16 pages
  • grant of the put and call options, with related definitions of option shares, exercise conditions and exercise periods
  • put option exercise and form of exercise notice
  • call option exercise and form of exercise notice
  • mechanics for sale and purchase of option shares
  • warranties and undertakings from the seller

What else do I need to know?

The principal matters which the parties to a put and call option agreement will need to negotiate include:

  • option shares: the number of option shares
  • exercise conditions: whether either option exercise is subject to satisfaction of any pre-conditions
  • exercise periods: the time periods during which the seller may exercise the put option and the buyer may exercise the call option
  • exercise price: the price payable for the shares

What other docs are available?

For alternative option agreements over shares, see:

Explanatory Guides

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Updated by a lawyer on 30/06/2025

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