How many categories can contracts be divided into?

The validity of a contract can be roughly divided into five types:

An effective contract is generally established and executed according to law, which is called an effective contract.

Invalid contract refers to the failure to follow legal or necessary procedures when the contract is established. Such a contract is called an invalid contract, and the law does not enforce it.

An illegal contract is called an illegal contract when the terms of the contract are illegal or immoral, and the law does not enforce it.

A contract without legal relationship (without legal recognition) belongs to a contract without legal relationship (without legal recognition) if there are defects or technical errors in the contract content.

When there are any defects in the contract or the legal contract expires, the contract can be terminated.

Technology contracts can be divided into technology development contracts, technology transfer contracts, technology consulting contracts and technical service contracts.

1. Technology development contract. Technology development contract refers to the contract concluded between the parties on the research and development of new technologies, new products, new processes, new materials and their systems. Technology development contracts include: commissioned development contracts and cooperative development contracts. A commissioned development contract refers to a contract in which one party entrusts another party with research and development. A cooperative development contract refers to a contract concluded by the parties for research and development.

2. Technology transfer contract. Technology transfer contract refers to the contract concluded by the parties on patent transfer, patent application right transfer, patent implementation license and non-patented technology transfer.

3. Technical consulting contract. Technical consultation contract refers to a contract concluded by one party to provide feasibility study, technical forecast, special technical investigation and analysis and evaluation report for the other party on a specific technical project.

4. Technical service contract. A technical service contract refers to a contract concluded by one party to solve a specific technical problem for the other party with technical knowledge, excluding contracts for survey, design, construction, installation and processing of construction projects.

What kinds of conditional contracts can be divided into?

Conditional conditions can be divided into delay conditions, termination conditions, positive conditions and negative conditions.

First, delay the conditions. The extension conditions refer to the conditions for determining the effectiveness of the contract according to the achievements of the contract. After the contract is established, the parties are unwilling to make it take effect immediately, and the contract will take effect only after the attached conditions are fulfilled. Therefore, it has the effect of delaying or stopping the contract from taking effect.

Second, the conditions are lifted. Termination condition means that the termination of contract effectiveness depends on the realization of conditional conditions. If the attached termination conditions are met, the original rights or obligations will be terminated; If the additional conditions are not met, the contract is still valid.

Third, affirm the conditions. Affirmative condition refers to the content that is conditional on the occurrence of some objective fact, so it is also called affirmative condition. It is conditional on the occurrence of certain facts (with conditions), but not on the occurrence of conditions.

Fourth, negative conditions. Negative condition refers to the content that is conditional on some objective fact not happening, so it is also called negative condition. Negative conditions are opposite to positive conditions, and positive conditions are realized on the condition that a certain fact does not occur, rather than on the condition that the fact occurs.