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IPR, Plagiarism and Licences Class 11 Computer Science

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Computer ScienceCBSE Class 11 · Societal Impact

IPR, Plagiarism and Open Source Licences Class 11: Copyright, Patent, Trademark, CC, GPL and Apache

Updated 17 October 2026 · Fact-checked

Intellectual property rights give a creator legal ownership of a creation of the mind: copyright protects original creative works automatically, a patent protects an invention for 20 years once granted, and a trademark protects a brand identity. Plagiarism is using work without credit; infringement is using it without permission. Public licences such as Creative Commons, GNU GPL and Apache tell users what they may do with a work.

Understand IPR, Plagiarism, Infringement and Open Source Licences: Copyright, Patent, Trademark, CC, GPL, Apache (CBSE 11)

Data protection. Sensitive data (biometric, health and financial details, personal photos) must be kept private because a leak can cause harm, embarrassment or unfairness. It is protected by encryption, authentication and laws on how data is processed, stored and sent.

Intellectual property is a creation of the mind: inventions, literary and artistic works, designs, names and logos. IPR give the creator legal ownership so that they can earn recognition or money.

  • Copyright: protects original creative works (writing, music, photos, videos, software, art). It arises automatically when the work is created and gives the owner the right to copy, adapt, distribute and display it.
  • Patent: protects an invention. It must be applied for and granted; it gives the inventor exclusive rights for 20 years, after which anyone may use it.
  • Trademark: protects a brand identity (name, logo, symbol, slogan, design) that distinguishes a company's goods and blocks confusingly similar marks.

Violation of IPR.

  • Plagiarism: presenting another person's work or idea as your own without crediting the source. Citing the source avoids plagiarism.
  • Copyright infringement: using copyrighted work without permission (or without paying, if it is sold). Giving credit does NOT make it legal if the owner has not allowed the use. Software piracy is copyright infringement.
  • Trademark infringement: unauthorised use of another's trademark or a confusingly similar one.

Public licences. A licence sets the rules under which others may use a work.

  • Creative Commons (CC): for creative works. The author chooses conditions: BY (give credit), SA (share adaptations under the same licence), NC (non-commercial use only), ND (no changes).
  • GNU GPL: for software; users may run, study, share and modify it, but a modified version that is distributed must also be released under the GPL with its source code (copyleft).
  • Apache licence: permissive; the code may be used, modified and distributed, even inside proprietary products, if the copyright and licence notices are kept and changes are stated.

Kinds of software. FOSS shares its source code openly (examples: Ubuntu, LibreOffice, Mozilla Firefox). Freeware is free to use but closed. Proprietary software is sold and its code is not shared.

IPR, Plagiarism, Infringement and Open Source Licences: Copyright, Patent, Trademark, CC, GPL, Apache (CBSE 11): key facts

Three IPR
  • copyright protects creative works, automatic
  • patent protects an invention, applied for, 20 years
  • trademark protects a brand identity
Match the creation to the right.
Violations
  • plagiarism is no credit
  • copyright infringement is no permission
  • trademark infringement is a copied or similar mark
Credit does not give permission.
CC conditions
  • BY give credit
  • SA share alike
  • NC non-commercial
  • ND no changes
Combine them, for example BY-NC-ND.
Software licences
  • GPL source must stay open when distributed
  • Apache is permissive, allowed in closed products
  • proprietary code is not shared
FOSS shares source code.

How to answer IPR, Plagiarism, Infringement and Open Source Licences: Copyright, Patent, Trademark, CC, GPL, Apache (CBSE 11) questions

To answer an IPR question, identify what was created and what the user did.

  1. 1Decide whether the creation is a creative work (copyright), an invention (patent) or a name or logo (trademark).
  2. 2Check whether the user gave credit, had permission, or both.
  3. 3No credit gives plagiarism; no permission gives infringement; both can happen together.
  4. 4For a licence question list each condition (BY, SA, NC, ND) and apply it to what the user wants to do.
  5. 5For GPL ask whether the modified code is distributed; for Apache check that the notices are kept.

IPR, Plagiarism, Infringement and Open Source Licences: Copyright, Patent, Trademark, CC, GPL, Apache (CBSE 11) in real life

The idea, met in an everyday situation. Answer the question in your own words, then compare with the model answer. The one-line hook is what to remember.

A project copied from the internet

Suppose Kabir pastes three paragraphs from a website into his school project and writes his own name on the cover.

Name the violation and show how to avoid it.

Try it first, then show the solutionSolution
  1. He presents another person's work as his own without credit: plagiarism.
  2. He should write the ideas in his own words and cite the source; if the text is copyrighted and he copies it as it is, he also needs permission.

Answer: Plagiarism; use own words and cite the source.

Memory hook: Credit fixes plagiarism; permission fixes infringement.

Tricks to remember IPR, Plagiarism, Infringement and Open Source Licences: Copyright, Patent, Trademark, CC, GPL, Apache (CBSE 11)

Short memory aids. Say each one aloud once, then use it on a question the same day.

  • C, P, T

    Copyright for creative works, Patent for inventions, Trademark for names and logos.

    Use it when: Choosing the right IPR.

  • BY, SA, NC, ND

    Credit, Same licence, No commerce, No changes.

    Use it when: Creative Commons questions.

  • GPL keeps it open, Apache lets it close

    GPL copyleft forces source to stay open; Apache is permissive.

    Use it when: Software licence comparison.

IPR, Plagiarism, Infringement and Open Source Licences: Copyright, Patent, Trademark, CC, GPL, Apache (CBSE 11): solved examples

Ordered from board level to HOTS. Try each one before you open the solution.

Example 1: Patent duration · 1 mark · MCQBoard level

Which IPR protects an invention and gives exclusive rights for 20 years?
(a) Copyright
(b) Trademark
(c) Patent
(d) Plagiarism

Try it first, then show the solutionSolution
  1. A patent is for inventions and must be applied for and granted.
  2. Its exclusive rights last for 20 years.

Answer: (c) Patent

Example 2: Plagiarism and infringement · 2 marks · Short answerBoard level

Differentiate between plagiarism and copyright infringement. (2 marks)

Try it first, then show the solutionSolution
  1. Plagiarism is presenting someone else's work or idea as your own without giving credit.
  2. Copyright infringement is using copyrighted work without permission, even if credit is given.

Answer: Plagiarism is about missing credit; infringement is about missing permission.

Example 3: Which violation? · 4 marks · Short answerHarder board level

Name the violation in each situation. (4 marks)
(a) A student copies a paragraph from a website into a project without naming the source.
(b) A person uploads a paid film to a public website.
(c) A shoe shop sells shoes with a logo almost identical to a well-known brand.
(d) A blogger prints a photographer's photo with proper credit, but the photographer has not allowed it.

Try it first, then show the solutionSolution
  1. (a) Not giving credit: plagiarism.
  2. (b) Distributing a copyrighted film without permission: copyright infringement.
  3. (c) Using a confusingly similar mark: trademark infringement.
  4. (d) Credit is given but permission is missing: copyright infringement, since credit does not make the use legal.

Answer: (a) Plagiarism (b) Copyright infringement (c) Trademark infringement (d) Copyright infringement

Example 4: Licence conditions case · 5 marks · Case-basedHOTS / competency

Case: A school club is building a website. It wants to use (1) a photograph under CC BY-NC-ND, (2) a software library under the GPL and (3) another library under the Apache licence. (5 marks)
(i) Can the club use the photograph on a website that sells tickets? Can it crop the photo? (2)
(ii) If the club modifies the GPL library and distributes its app, what must it do? (1)
(iii) Can the Apache library be used in a closed (proprietary) product? State one condition. (2)

Try it first, then show the solutionSolution
  1. (i) NC allows only non-commercial use, so a website that sells tickets is commercial and not allowed. ND means no changes, so cropping (a change) is not allowed. Credit (BY) would still be needed for any permitted use.
  2. (ii) A distributed modified version must also be released under the GPL together with its source code.
  3. (iii) Yes, Apache is permissive. Condition: keep the copyright and licence notices and state the changes made.

Answer: (i) No to ticket sales (NC) and no to cropping (ND). (ii) Release the modified app under the GPL with source code. (iii) Yes, keeping the notices and stating changes.

Example 5: Choosing the IPR · 4 marks · Short answerHarder board level

Which IPR suits each creation, and which of them need an application and a grant? (4 marks)
(a) A new water-saving tap mechanism.
(b) A song written by a band.
(c) The logo and tagline of a snack company.

Try it first, then show the solutionSolution
  1. (a) An invention: patent.
  2. (b) An original creative work: copyright.
  3. (c) A brand identity: trademark.
  4. A patent must be applied for and granted; copyright arises automatically when the song is created.

Answer: (a) Patent (b) Copyright (c) Trademark; the patent needs an application and grant, copyright is automatic.

Where students lose marks in IPR, Plagiarism, Infringement and Open Source Licences: Copyright, Patent, Trademark, CC, GPL, Apache (CBSE 11)

The slips examiners see most often, and what to write instead.

  • Mistake: Saying credit makes copying legal

    Mixing up plagiarism and infringement.

    Wrong working

    If I name the author I can copy the work freely

    Right working

    Naming the author avoids plagiarism but permission is still needed

    Do this: Credit and permission are separate.

    Usually costs: 1 to 2 marks

  • Mistake: Calling a patent automatic

    Confusing it with copyright.

    Wrong working

    A patent is given the moment an invention is made

    Right working

    A patent must be applied for and granted; copyright is automatic

    Do this: Remember which is automatic.

    Usually costs: 1 mark

  • Mistake: Mixing up GPL and Apache

    Treating both as the same freedom.

    Wrong working

    Apache forces modified code to be open source

    Right working

    GPL forces openness on distribution; Apache is permissive and allows closed products

    Do this: Name copyleft for GPL.

    Usually costs: 1 mark

Exam tips

  • Always pair plagiarism with credit and infringement with permission.
  • Give the 20-year duration only for patents.
  • List the CC letters with their meanings when a CC licence is named.
  • Give one example of FOSS when asked, such as LibreOffice or Mozilla Firefox.

Practice questions on IPR, Plagiarism, Infringement and Open Source Licences: Copyright, Patent, Trademark, CC, GPL, Apache (CBSE 11)

Write each answer on paper first. Open the hint only if you are stuck, and the answer only when you have finished.

  1. Q1 · 1 mark · MCQBoard level

    Which licence is permissive and allows the code to be used inside proprietary products?
    (a) GNU GPL
    (b) Apache licence
    (c) CC BY-ND
    (d) Patent

    Hint

    Permissive.

    Answer

    (b) Apache licence

  2. Q2 · 1 mark · Assertion-reasonHarder board level

    Assertion (A): Giving credit to the author makes the use of a copyrighted work legal.
    Reason (R): Plagiarism is about not giving credit, while copyright infringement is about not having permission.
    (a) Both A and R are true, and R is the correct explanation of A.
    (b) Both A and R are true, but R is not the correct explanation of A.
    (c) A is true, but R is false.
    (d) A is false, but R is true.

    Hint

    Credit is not permission.

    Answer

    (d) A is false, but R is true.

  3. Q3 · 3 marks · Short answerHarder board level

    Define FOSS, freeware and proprietary software, giving one example of FOSS. (3 marks)

    Hint

    Think of whether the source is shared and the price.

    Answer

    FOSS (Free and Open Source Software) shares its source code openly, for example LibreOffice or Mozilla Firefox. Freeware is free to use but its code is closed. Proprietary software is sold and its source code is not shared.

  4. Q4 · 4 marks · Short answerHarder board level

    Explain the Creative Commons conditions BY, SA, NC and ND. What may a user do with a work under CC BY-SA? (4 marks)

    Hint

    Credit plus the same licence.

    Answer

    BY: give credit to the author. SA: share adaptations under the same licence. NC: non-commercial use only. ND: no changes. Under CC BY-SA a user may use and adapt the work, but must credit the author and release the adapted work under the same licence.

  5. Q5 · 5 marks · Case-basedHOTS / competency

    Case: A clinic stores patients' health records and photos in a mobile app. The developers copy code from a GPL-licensed program into their own closed app and sell it without releasing any source. (5 marks)
    (i) Why is the stored data sensitive, and how can it be protected? (2)
    (ii) Which licence rule is broken, and what should the developers have done? (2)
    (iii) Which IPR violation is involved? (1)

    Hint

    Look at the GPL rule for distributed versions.

    Answer

    (i) Health records and photos are sensitive: a leak can cause harm or embarrassment. Protect them with encryption, authentication and rules on how they are processed, stored and sent. (ii) A distributed version derived from GPL code must also be released under the GPL with its source code; the developers should have released their app and source under the GPL (or not used the code). (iii) Using the code against the licence terms is copyright infringement.

Test your recall

Answer in your head or on paper first, then open the card. Pulling an answer out of memory makes it stick far better than re-reading.

  1. 1.Which IPR protects a logo?Show answer

    A trademark.

  2. 2.Is copyright applied for?Show answer

    No; it is automatic when the work is created.

  3. 3.What does ND mean in Creative Commons?Show answer

    No changes to the work.

  4. 4.What is copyleft in the GPL?Show answer

    A distributed modified version must also be released under the GPL with source code.

  5. 5.What is software piracy?Show answer

    Copying or distributing software without a licence, which is copyright infringement.

IPR, Plagiarism, Infringement and Open Source Licences: Copyright, Patent, Trademark, CC, GPL, Apache (CBSE 11): frequently asked questions

Is plagiarism a crime?

It is unethical in every case; it becomes copyright infringement when the copied work is protected and used without permission.

Can GPL software be sold?

Yes, users may charge for copies, but distributed modified versions must stay under the GPL with source code.

What does a trademark protect?

A brand identity such as a name, logo, symbol or slogan.