The short answer

Section 21 of the Trademarks Act, 2009 allows two or more persons who are connected in trade for the goods or services to be registered as joint proprietors. Their rights then work as one proprietor's. Two unconnected businesses that simply use the same mark are not co-owners.

Sec 21
Governing section
2 or more
Co-owners
1
Joint application
As one
Rights treated

What Section 21 says

21(1)

No co-ownership by parallel use

Two unconnected users of the same mark do not become joint owners. Each stands on its own rights.

21(2)

Connected traders

Persons connected in the trade may be registered together, and their rights work as one proprietor's.

Example. Two tailors in different cities selling shirts under "Nilkantha" without any link are not co-owners. Two companies that set up a joint venture to make and sell those shirts are connected, so Section 21(2) can apply.

Who can co-own a mark

  • Companies in a joint venture
  • Partners in a firm using one name
  • Relatives running a family brand across shops or entities
  • Co-manufacturers of a co-branded product
  • A foreign brand owner and a Bangladeshi partner, if both take part in the trade
  • A founder and the company the founder runs

A passive investor, a supplier, a buyer, or someone who merely picked the same name does not qualify. The link must concern the goods or services in the application.

Documents and evidence

DocumentProves
Joint venture agreementShared trade and brand plans
Partnership deedPartners and business name
Co-branding or co-manufacturing contractWho makes, packs and sells
Trade licences and incorporation papersEach applicant exists and trades
Invoices, catalogues, packagingJoint use of the mark
Power of attorneyAgent's authority

Names must match the trade licence and incorporation papers letter for letter. Dated evidence, such as both parties on one invoice or price list, is the strongest proof of connection.

How to file

1

Search the register

  • One search covers all future co-owners
2

Agree the terms first

  • Who owns what, who may use the mark and how disputes are decided, in a co-ownership agreement
3

File one application naming every co-owner

  • Attach the connection evidence and a power of attorney signed by each applicant

Agree in writing how the mark may be licensed, assigned or enforced, because one co-owner's act can affect all.

Co-ownership questions

Can two unrelated companies co-own a mark?

No. They must be connected in trade for the goods or services.

Is a joint application one filing?

Yes. All co-owners are named in one application.

Do I need a co-ownership agreement?

It is strongly advised, to settle use, licensing and disputes before filing.

Need help with a trademark dispute or filing?

SUPREMEiP® files, defends and cancels trademarks worldwide and in Bangladesh. Send us the details.

#TrademarkBangladesh#JointProprietorship#Section21#IPLaw

Law and fees checked October 2026. General information, not legal advice. Written by the IP team at SUPREMEiP®.

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